a worm, mollusc, insect, or insect larva which bores into wood, other plant material, or rock
a beetle that feeds on grain and rice and is a common pest of granaries and flour mills
any of a number of burrowing bivalve molluscs which bore into rock and other hard materials, in particular:
the larva of an ambrosia beetle, which makes minute round holes in timber
a moth whose larvae feed upon and bore into maize
a beetle that feeds on grain and rice and is a common pest of granaries and flour mills