peep

As a noun astrolabe

is an astronomical and navigational instrument for gauging the altitude of the sun and stars.

As an acronym peep is

(slang) a world war ii jeep attached to an armored regiment.

As an acronym peep

is (slang) a world war ii jeep attached to an armored regiment.

As a verb underpeep is

to peep under.

As a noun peep

is a quiet sound, particularly one from a baby bird.

As a verb peep

is to make a soft, shrill noise like a baby bird.

As an acronym PEEP

is a World War II jeep attached to an armored regiment.

As an adjective peepy is

inclined to peep (to watch someone or something).