(n) :
any of many terrestrialpulmonategastropodmollusks, having no (or only rudimentary) shell; the Imperial (English) unit of mass that accelerates by 1 foot per second squared (1 ft/s?) when a force of one pound-force (lbf) is exerted on it
(n) :
any of many terrestrialpulmonategastropodmollusks, having no (or only rudimentary) shell; the Imperial (English) unit of mass that accelerates by 1 foot per second squared (1 ft/s?) when a force of one pound-force (lbf) is exerted on it