tailed /teɪld/adjective 2phrases 1 adjective2 •[in compounds] Having a tail.There are several tailed species of mammals.This is a species of long-tailed mouse. •Of certain butterflies, having one or more filamentous projections on the tornal section of each hind wing. Phrases with tailed bright-eyed and bushy-tailedEager, alert, enthusiastic, and lively.