truckle(noun, verb) noun1. a low bed to be slid under a higher bedSimilar word(s): trundleDefinition categories: man–made, bed verb1. yield to out of weaknessDefinition categories: stative, relent, soften, yield2. try to gain favor by cringing or flatteringSimilar word(s): bootlick, fawn, kotow, kowtow, toadyDefinition categories: communication, blandish, flatter