The Collaborative International Dictionary
Roughtail
Roughtail \Rough"tail`\, n. (Zo["o]l.) Any species of small ground snakes of the family Uropeltid[ae]; -- so called from their rough tails.
Wiktionary
roughtail
a. (context zoology in animal names English) Having a rough tail. n. A small ground snake of the family (taxlink Uropeltidae family noshow=1).