#1 peep v. look furtively; "He peeped at the woman through the window". wn
#2 peep n. [cheep] the short weak cry of a young bird. wn
#3 peep n. [peek] a secret look. wn
#4 peep v. cause to appear; "he peeped his head through the window". wn
#5 peep v. [cheep, chirp, chirrup] make high-pitched sounds; "the birds were chirping in the bushes". wn
vizzz