[heft] n [fr. heave, after such pairs as weave : weft] (15c) 1 a: weight, heaviness b: importance, influence
2. archaic: the greater part of something: bulk
[2]heft vt (1661) 1: to heave up: hoist
2: to test the weight of by lifting "~ing the rod ... to get the feel of it --Consumer Reports"