terebrating

from The Collaborative International Dictionary of English v.0.48
Terebrating \Ter"e*bra`ting\, a.
   1. (Zool.) Boring; perforating; -- applied to molluskas which
      form holes in rocks, wood, etc.
      [1913 Webster]

   2. (Med.) Boring; piercing; -- applied to certain kinds of
      pain, especially to those of locomotor ataxia.
      [1913 Webster]
    

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