The term 'move heavily' can be described by a variety of words, all of which have to do with carrying or transporting something in a slow and laborious manner. The crossword solutions for this term include 'LUMBER' (6 letters), 'PLOD' (4 letters), 'TRUNDLE' (7 letters), 'LUG' (3 letters), and 'DRAG' (4 letters). LUMBER is an archaic term that refers to the act of walking slowly and heavily, while PLOD is a verb meaning to move slowly and steadily. TRUNDLE is another verb that means to roll or DRAG something along, and LUG is a verb meaning to carry something with great effort. Finally, DRAG is a verb meaning to pull something along with difficulty.