gerbil UK /ˈdʒɜːbl̩/US /ˈd͡ʒɝbl̩/verb 2noun 1forms 5 verb2 •(slang) To insert a small animal (typically a gerbil, supposedly) into one's rectum (a sexual practice in urban myth). •To rotate inside a monowheel or similar apparatus due to sudden acceleration or braking. noun1 •A member of one of several species of small, jumping, mouselike rodents of the subfamily Gerbillinae, native to Africa, India, and Southern Europe. formsgerbiled · gerbilled · gerbiling · gerbilling · gerbils