fum

a. [ From Fume. ] Smoky; hence, fond of smoking; addicted to smoking tobacco. [ 1913 Webster ]

/mhw>, n.; pl. Fumades Fumadoes [ Sp. fumodo smoked, p. p. of fumar to smoke, fr. L. fumare. See Fume, v. i. ] A salted and smoked fish, as the pilchard. [ 1913 Webster ]

n. [ OF. fumage, fumaige, fr. L. fumus smoke. ] Hearth money. [ 1913 Webster ]

Fumage, or fuage, vulgarly called smoke farthings. Blackstone. [ 1913 Webster ]

n. (Chem.) A salt of fumaric acid. [ 1913 Webster ]

a. (Chem.) Pertaining to, or derived from, fumitory (Fumaria officinalis). [ 1913 Webster ]

Fumaric acid (Chem.), a widely occurring organic acid, extracted from fumitory as a white crystallline substance, C2H2(CO2H)2, and produced artificially in many ways, as by the distillation of malic acid; boletic acid. It is found also in the lichen, Iceland moss, and hence was also called lichenic acid. [ 1913 Webster ]

n. [ L. fumus smoke, fume. ] (Chem.) An alkaloid extracted from fumitory, as a white crystalline substance. [ 1913 Webster ]

n. [ It. fumaruola, fr. fumo smoke, L. fumus: cf. F. fumerolle, fumarolle. ] A hole or spot in a volcanic or other region, from which fumes issue. [ 1913 Webster ]

‖n.; L. pl. -ria /plu>. [ NL., fr. L. fumare, fumatum, to smoke. ] An air-tight compartment in which vapor may be generated to destroy germs or insects; esp., the apparatus used to destroy San José scale on nursery stock, with hydrocyanic acid vapor. [ Webster 1913 Suppl. ]