fathom [fath -uh m]
noun, plural fathoms (especially collectively) fathom.
1. a unit of length equal to six feet (1.8 meters): used chiefly in nautical measurements. Abbreviation: fath.
verb (used with object)
2. to measure the depth of by means of a sounding line; sound.
3. to penetrate to the truth of; comprehend; understand: to fathom someone's motives.
Origin: before 900; Middle English fathme, Old English fæthm span of outstretched arms; cognate with German Faden six-foot measure, Old Norse fathmr; akin to patent
Now YOU come up with a sentence (or fic? or graphic?) that best illustrates the word.