borer

borer is a   Noun

Definition:

[1] One that bores; an instrument for boring.

[2] A marine, bivalve mollusk, of the genus Teredo and allies, which burrows in wood. See Teredo.

[3] Any bivalve mollusk (Saxicava, Lithodomus, etc.) which bores into limestone and similar substances.

[4] One of the larvæ of many species of insects, which penetrate trees, as the apple, peach, pine, etc. See Apple borer, under Apple.

[5] The hagfish (Myxine).

Synonyms: