[f. WHEEZE v. + -ER1.] One who wheezes; esp. a broken-winded horse.
1831. Youatt, Horse, x. 196. The Wheezer utters a sound not unlike that of an asthmatic person when a little hurried.
1844. H. Stephens, Bk. Farm, II. 227.
transf. 1915. Blackw. Mag., Aug., 259/1. Beastly cold on top of this old wheezer [sc. omnibus].