A tier is a level or a layer. If you sit in the top tier of seats at a concert, you can see the whole stage and most of the audience — but you probably have to climb lots of stairs.

A tier can describe a layer of ruffles on a dress, a section of seats in a stadium, or one layer of a fancy cake. You could also talk about a tier in terms of value or position. For example, the most popular, well-known actors might be considered part of the top tier, getting all the best parts. Tier originated from the Old French word tire: rank, sequence, or order.

Definitions of tier
  1. noun
    one of two or more layers one atop another
    tier upon tier of huge casks”
    “a three- tier wedding cake”
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    type of:
    bed, layer
    single thickness of usually some homogeneous substance
  2. noun
    a relative position or degree of value in a graded group
    synonyms: grade, level
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    show 8 types...
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    biosafety level
    the level of safety from exposure to infectious agents; depends on work practices and safety equipment and facilities
    A level
    the advanced level of a subject taken in school (usually two years after O level)
    GCSE, General Certificate of Secondary Education, O level
    the basic level of a subject taken in school
    college level
    the level of education that college students are assumed to have attained
    biosafety level 1
    exposure only to infectious agents that do not ordinarily cause human disease
    biosafety level 2
    exposure to infectious agents that can cause disease in humans but whose potential for transmission is limited
    biosafety level 3
    exposure to infectious agents that can be transmitted by the respiratory route and which can cause serious infection
    biosafety level 4
    exposure to exotic infectious agents that pose a high risk of life-threatening disease and can be transmitted as an aerosol and for which there is no vaccine or therapy
    type of:
    relative status
  3. noun
    any one of two or more competitors who tie one another
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    type of:
    challenger, competition, competitor, contender, rival
    the contestant you hope to defeat
  4. noun
    a worker who ties something
    synonyms: tier up
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    type of:
    a person who works at a specific occupation
  5. noun
    something that is used for tying
    “the sail is fastened to the yard with tiers
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    type of:
    a strong line
Word Family

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