"fathom" in the noun sense
1. fathom, fthm
a linear unit of measurement (equal to 6 feet) for water depth
2. fathom, fthm
mining) a unit of volume (equal to 6 cubic feet) used in measuring bodies of ore
"fathom" in the verb sense
1. penetrate, fathom, bottom
come to understand
2. fathom, sound
measure the depth of (a body of water) with a sounding line
Source: WordNet® (An amazing lexical database of English)
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