To look slyly, or with the eyes half closed, or through a crevice; to peep.
Close your eyes, and no peeking!
To be only slightly, partially visible, as if peering out from a hiding place.
A pale strip of white skin peeked out from under his waistband.
To briefly move out of cover (to gather visual information).
Sniper watching the site; don't peek.
A quick glance or look.
Misspelling of pique.
A surname.
From Middle English *peken, piken, pyken (“to peep”), probably a fusion of Middle English pepen (“to peep”) and keken, kiken (“to keek, look, spy”), equivalent to a blend of peep + keek. Perhaps also ...
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