Gribble \Grib"ble\, n. [Cf. Prov. E. grib to bite.] (Zool.)
A small marine isopod crustacean ({Limnoria lignorum} or
{Limnoria terebrans}), which burrows into and rapidly
destroys submerged timber, such as the piles of wharves, both
in Europe and America.
[1913 Webster]