{ Fres`nel" lamp" (?), Fres'nel' lan'tern (?).} [From Fresnel the
inventor, a French physicist.] A lantern having a lamp surrounded by a
hollow cylindrical Fresnel lens.
Fres`nel" lens" (?). [See Fresnel lamp.] (Optics) See under Lens.
Fret (frt), n. [Obs.] See 1st Frith.
Fret (frt), v. t. [imp. & p. p. Fretted; p. pr. & vb. n. Fretting.]
[OE. freten to eat, consume; AS. fretan, for foretan; pref. for- + etan
to eat; akin to D. vreten, OHG. frezzan, G. fressen, Sw. fr‰ta, Goth.
fra-itan. See For, and Eat, v. t.] 1. To devour. [Obs.]
The sow frete the child right in the cradle.
Chaucer.
2. To rub; to wear away by friction; to chafe; to gall; hence, to eat
away; to gnaw; as, to fret cloth; to fret a piece of gold or other
metal; a worm frets the plants of a ship.
With many a curve my banks I fret.
Tennyson.