Defn: The aquatic larva of a gnat; — called also, colloquially, wiggler.

GNAW
Gnaw, v. t. [imp. & p. p. Gnawed; p. pr. & vb. n. Gnawing.] Etym:
[OE. gnawen, AS. gnagan; akin to D. knagen, OHG. gnagan, nagan, G.
nagen, Icel. & Sw. gnaga, Dan. gnave, nage. Cf. Nag to tease.]

1. To bite, as something hard or tough, which is not readily separated or crushed; to bite off little by little, with effort; to wear or eat away by scraping or continuous biting with the teeth; to nibble at. His bones clean picked; his very bones they gnaw. Dryden.

2. To bite in agony or rage. They gnawed their tongues for pain. Rev. xvi. 10.

3. To corrode; to fret away; to waste.

GNAW
Gnaw, v. i.

Defn: To use the teeth in biting; to bite with repeated effort, as in
eating or removing with the teethsomething hard, unwiedly, or
unmanageable.
I might well, like the spaniel, gnaw upon the chain that ties me. Sir
P. Sidney.

GNAWER
Gnaw"er, n.

1. One who, or that which, gnaws.

2. (Zoöl.)