When you peek, you take a quick glance at something. It's incredibly tempting when you're little to peek at your birthday presents, but you soon learn how disappointing it is to spoil the surprise.

A sneaky look at something is a peek. You might peek at someone if you're shy or you don't want them to catch you looking. You can also describe a glance at a part of something as "a peek" — like when you take a peek at a napping child. Peek comes from piken, a 14th century word meaning "look quickly and slyly." Until the 15th century, the word peek was used interchangeably with keek and peep.

Definitions of peek
  1. verb
    throw a glance at; take a brief look at
    “I only peeked--I didn't see anything interesting”
    synonyms: glance, glint
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    type of:
    perceive with attention; direct one's gaze towards
  2. noun
    a secret look
    synonyms: peep
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    type of:
    look, looking, looking at
    the act of directing the eyes toward something and perceiving it visually
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