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The Collaborative International Dictionary
Terebrating

Terebrating \Ter"e*bra`ting\, a.

  1. (Zo["o]l.) Boring; perforating; -- applied to molluskas which form holes in rocks, wood, etc.

  2. (Med.) Boring; piercing; -- applied to certain kinds of pain, especially to those of locomotor ataxia.

Wiktionary
terebrating

vb. (present participle of terebrate English)