Heft \Heft\, v. t. [imp. & p. p. {Hefted} ({Heft}, obs.); p. pr. & vb. n. {Hefting}.] 1. To heave up; to raise aloft. [1913 Webster] Inflamed with wrath, his raging blade he heft. --Spenser. [1913 Webster] 2. To prove or try the weight of by raising. [Colloq.] [1913 Webster]