a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
a scrap or morsel of food left at a meal.
a gadget; dingus; thingumbob.
a fool or simpleton; ninny.
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.
1530s, "to draw off or out, to use up completely," from L. exhaustus, pp. of exhaurire "draw off, take away, use up," from ex- "off" + haurire "to draw up" (as water), from PIE *aus- "to draw water." Noun sense of "waste gas" (1848) was originally from steam engines. Related: Exhausting