Merriam-Webster Collegiate Dictionary - peep

 I. intransitive verb  Etymology: Middle English pepen, of imitative origin  Date: 15th century  1. to utter a feeble shrill sound as of a bird newly hatched ; cheep  2. to utter the slightest sound  II. noun  Date: 15th century  1. a feeble shrill sound ; cheep  2. a slight utterance especially of complaint or protest don't let me hear another ~ out of you  3. any of several small sandpipers  III. verb  Etymology: Middle English pepen, perhaps alteration of piken to peek  Date: 15th century  intransitive verb  1.  a. to peer through or as if through a crevice  b. to look cautiously or slyly  2. to begin to emerge from or as if from concealment ; show slightly  transitive verb  1. to put forth or cause to protrude slightly  2. slang to have a look at ; see, watch  IV. noun  Date: 1530  1. a first glimpse or faint appearance at the ~ of dawn  2.  a. a brief look ; glance  b. a furtive look