A star twinkles in the night sky. To put it more scientifically, it’s a celestial body of hot gases radiating energy. A star is also a person who dazzles — the star of the show or the star archaeologist.

If you're starring in a Broadway show, your name gets top billing — you've got the biggest part or maybe you're the best known performer, the actor people are wild to see, the one with the most "star power." If you believe in fate or astrology, you might "thank your lucky stars" for your good fortune. Star is the same root as the Greek aster, as in asterisk — a star symbol.

Definitions of star
  1. noun
    (astronomy) a celestial body of hot gases that radiates energy derived from thermonuclear reactions in the interior
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    Alpha Crucis
    the brightest star in the Southern Cross
    Beta Centauri
    the second brightest star in Centaurus
    Beta Crucis
    the second brightest star in the Southern Cross
    the brightest star in Cygnus
    a star in Leo approximately 43 light years from Earth
    the brightest star in Gemini; close to Castor
    the brightest star in Leo
    the brightest star in Virgo
    one of the stars in the star cluster Pleiades
    the star that is the source of light and heat for the planets in the solar system
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    binary, binary star, double star
    a system of two stars that revolve around each other under their mutual gravitation
    fixed star
    any star in the Ptolemaic theory of planetary motion
    giant, giant star
    a very bright star of large diameter and low density (relative to the Sun)
    loadstar, lodestar
    guiding star; a star that is used as a reference point in navigation or astronomy
    multiple star
    a system of three or more stars associated by gravity
    neutron star
    a star that has collapsed under its own gravity; it is composed of neutrons
    a star that ejects some of its material in the form of a cloud and become more luminous in the process
    red dwarf, red dwarf star
    a small, old, relatively cool star; approximately 100 times the mass of Jupiter
    red giant, red giant star
    a large, old, luminous star; has a relatively low surface temperature and a diameter large relative to the sun
    any star around which a planetary system revolves
    an extremely bright star of very large diameter and low density
    a star that explodes and becomes extremely luminous in the process
    variable, variable star
    a star that varies noticeably in brightness
    white dwarf, white dwarf star
    a faint star of enormous density
    flare star
    a red dwarf star in which luminosity can change several magnitudes in a few minutes
    a degenerate neutron star; small and extremely dense; rotates very fast and emits regular pulses of polarized radiation
    a multiple star in the constellation of Orion
    type of:
    celestial body, heavenly body
    a natural object visible in the sky
  2. noun
    any celestial body visible (as a point of light) from the Earth at night
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    a small star
    type of:
    celestial body, heavenly body
    a natural object visible in the sky
  3. noun
    someone who is dazzlingly skilled in any field
    synonyms: ace, adept, champion, genius, hotshot, maven, mavin, sensation, superstar, virtuoso, whiz, whizz, wiz, wizard
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    track star
    a star runner
    type of:
    expert, pundit
    a person with special knowledge or ability who performs skillfully
  4. noun
    a performer who receives prominent billing
    synonyms: headliner
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    type of:
    performer, performing artist
    an entertainer who performs a dramatic or musical work for an audience
  5. noun
    an actor who plays a principal role
    synonyms: lead, principal
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    one of two actors who are given equal status as stars in a play or film
    film star, movie star
    a star who plays leading roles in the cinema
    icon, idol, matinee idol
    someone who is adored blindly and excessively
    TV star, television star
    a star in a television show
    an object of infatuation
    type of:
    actor, histrion, player, role player, thespian
    a theatrical performer
  6. verb
    feature as the star
    “The movie stars Dustin Hoffman as an autistic man”
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    feature as the co-star in a performance
    type of:
    feature, have
    have as a feature
  7. verb
    be the star in a performance
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    be the co-star in a performance
    type of:
    do, execute, perform
    carry out or perform an action
  8. adjective
    indicating the most important performer or role
    “a star figure skater”
    “the starring role”
    synonyms: leading, prima, starring, stellar
    of greater importance or stature or rank
  9. noun
    the topology of a network whose components are connected to a hub
    synonyms: star topology
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    type of:
    network topology, topology
    the configuration of a communication network
  10. noun
    a plane figure with 5 or more points; often used as an emblem
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    a regular polygon formed by extending each of the sides of a regular hexagon to form two equilateral triangles
    (mineralogy) a star-shaped figure with six rays that is seen in some crystal structures under reflected or transmitted light
    pentacle, pentagram, pentangle
    a star with 5 points; formed by 5 straight lines between the vertices of a pentagon and enclosing another pentagon
    Magen David, Mogen David, Shield of David, Solomon's seal, Star of David
    a six-pointed star formed from two equilateral triangles; an emblem symbolizing Judaism
    type of:
    plane figure, two-dimensional figure
    a two-dimensional shape
  11. noun
    a star-shaped character * used in printing
    synonyms: asterisk
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    type of:
    character, grapheme, graphic symbol
    a written symbol that is used to represent speech
  12. verb
    mark with an asterisk
    “Linguists star unacceptable sentences”
    synonyms: asterisk
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    type of:
    make or leave a mark on
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