[f. LUMBER v.1 + -ING1.] The action of LUMBER v.
1621. Lady M. Wroth, Urania, 486. Wee heard a noise continuing with increase of lumbring.
1782. Cowper, Gilpin, 232. The lumbering of the wheels.
1816. Scott, Old Mort., xviii. The lumbering of the old guns backwards and forwards shook the battlements.