(informal) A preview, especially of something not yet public.

Alternative form of peekaboo

plural of sneak peek

A trick wallet intended to conceal an item from the performer's view during a magic trick, but actually allowing them to see what is inside.

plural of peek wallet

A bra that is more revealing than usual, revealing more of the breast and often the nipple.

plural of peek-a-boo bra

(games) A game for a small child in which one covers one's face, then suddenly reveals it, saying "Boo!" or "Peekaboo!".

(of clothing) with holes, slits or transparent fabric to reveal what is normally hidden. / (boxing) Being or using a style of boxing with the hands kept close to the face to defend it.

(intransitive) To peep out.