Source : Webster's Revised Unabridged Dictionary (1913)

Heft \Heft\, v. t. [imp. & p. p. {Hefted} ({Heft}, obs.); p. pr.
   & vb. n. {Hefting}.]
   1. To heave up; to raise aloft.

            Inflamed with wrath, his raging blade he heft.
                                                  --Spenser.

   2. To prove or try the weight of by raising. [Colloq.]