资料来源 : Webster's Revised Unabridged Dictionary (1913)

Fathom \Fath"om\, v. t. [imp. & p. p. {Fathomed}; p. pr. & vb.
   n. {Fathoming}.]
   1. To encompass with the arms extended or encircling; to
      measure by throwing the arms about; to span. [Obs.]
      --Purchas.

   2. The measure by a sounding line; especially, to sound the
      depth of; to penetrate, measure, and comprehend; to get to
      the bottom of. --Dryden.

            The page of life that was spread out before me
            seemed dull and commonplace, only because I had not
            fathomed its deeper import.           --Hawthotne.