1. look quickly, typically in a furtive manner: "faces peeked from behind the curtains"Similarpeephave a peephave a peektake a secret lookspytake a sly/stealthy looksneak a lookglancecast a brief looklook hurriedlylookpeerkeekinformal:take a ganderhave a look-seegive someone/something a/the once-overhave a squinthave a dekkohave/take a butcher'stake a shufti
▪ protrude slightly so as to be just visible:"his socks were so full of holes his toes peeked through"Similarappear (slowly/partly)showcome into view/sightmake an appearanceput in an appearancepresent oneself/itselfbecome visibleemergeissuepeeppeer outsurfaceloomshow one's/its facecome to lightspring uppop up
noun
1. a quick or furtive look:"she sneaked a peek at the map"
Word Originlate Middle Englishpike, pyke, of unknown origin.