‖n. pl. [ NL., fr. Gr. &unr_; fringe + &unr_; tail. ] (Zool.) An order of wingless hexapod insects which have setiform caudal appendages, either bent beneath the body to form a spring, or projecting as bristles. It comprises the Cinura, or bristletails, and the Collembola, or springtails. Called also
n. (Zool.) One of the Thysanura. Also used adjectively. [ 1913 Webster ]