Fume, subst. 1) vapor: “love is a smoke raised with the f. of sighs,” Rom. I, 1, 196.
2) a delusion, a fantasm, any thing hindering, like a mist, the function of the brain: “the ignorant --s that mantle their clearer reason,” Tp. V, 67. “memory shall be a f., and the receipt of reason a limbeck only,” Mcb. I, 7, 66. “shot at nothing, which the brain makes of --s,” Cymb. IV, 2, 301.
3) a passion which deprives the mind of self-control: “bites the poor flies in his f.” Ven. 316. “her f. needs no spurs,” H6B I, 3, 153.