ETYM Old Eng. slugge slothful, sluggen to be slothful; cf. LG. slukk low-spirited, sad, Eng. slack, slouch, Dutch slak, slek, a snail.
Obsolete unit of mass, equal to 14.6 kg/32.17 lb. It is the mass that will have an acceleration of one foot per second when under a force of one pound weight.
Unit of gravitational mass of approximately 32.174 pounds.

Air-breathing gastropod related to the snails, but with absent or much reduced shell.
Any of various terrestrial gastropods having an elongated slimy body and no external shell.

To strike heavily, esp. with the fist or a bat; SYN. slog, swig.