GAS

I. noun (plural ~es; also ~ses) Etymology: New Latin, alteration of Latin chaos space, chaos Date: 1779 a fluid (as air) that has neither independent shape nor volume but tends to expand indefinitely, 2. a combustible ~ or ~eous mixture for fuel or lighting, a ~eous product of digestion, a ~ or ~eous mixture used to produce anesthesia, a substance that can be used to produce a poisonous, asphyxiating, or irritant atmosphere, empty talk ; bombast , ~oline , driving force ; energy , something that gives pleasure ; delight , II. verb (~sed; ~sing) Date: 1852 intransitive verb to talk idly or garrulously, to give off ~, to fill the tank (as of an automobile) with ~oline, transitive verb to supply with ~ or especially ~oline , 2. to treat chemically with ~, to poison or otherwise affect adversely with ~, to please greatly