fath•om
Pronunciation: (fa'um), [key]
— n., pl. v. fath•oms, fath•om,
—n.
- a unit of length equal to six feet (1.8 meters): used chiefly in nautical measurements. Abbr.: fath
—v.t.
- to measure the depth of by means of a sounding line; sound.
- to penetrate to the truth of; comprehend; understand: to fathom someone's motives.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.