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The Collaborative International Dictionary
Terebrant

Terebrant \Ter"e*brant\, a. [L. terebrans, -antis, p. pr.] (Zo["o]l.) Boring, or adapted for boring; -- said of certain Hymenoptera, as the sawflies.

Wiktionary
terebrant

a. (cx zoology of an insect English) That bores. n. (cx zoology English) Any insect that bores.