The Collaborative International Dictionary
Shieldtail
Shieldtail \Shield"tail`\, n. (Zo["o]l.) Any species of small burrowing snakes of the family Uropeltid[ae], native of Ceylon and Southern Asia. They have a small mouth which can not be dilated.
Wiktionary
shieldtail
n. Any species of small burrowing snakes of the family ''(taxlink Uropeltidae family noshow=1)'', native to Ceylon and Southern Asia.