terebra

Etymology
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Noun

 * 1) The boring ovipositor of a hymenopterous insect.
 * 2)  An Ancient Roman engine for making a breach in a wall.

Etymology 1
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Noun

 * 1)  (the ovipositor of hymenopterous insects)

Etymology 1
From.

Noun

 * 1) an instrument for boring; borer; gimlet