Definify.com
Webster 1913 Edition
Borer
Bor′er
,Noun.
1.
One that bores; an instrument for boring.
2.
(Zool.)
(a)
A marine, bivalve mollusk, of the genus
Teredo
and allies, which burrows in wood. See Teredo
. (b)
Any bivalve mollusk (
Saxicava
, Lithodomus
, etc.) which bores into limestone and similar substances. (c)
One of the larvæ of many species of insects, which penetrate trees, as the apple, peach, pine, etc. See
Apple borer
, under Apple
. (d)
The hagfish (
Myxine
). Webster 1828 Edition
Borer
BO'RER
,Noun.
1.
Terebella, the piercer, a genus of sea worms, that pierce wood.