Laugh

laf, v. i. [laughed (lalt), laughing.] To pre mirth, derision, or satisfaction by the countenance or voice; to appear gay, lively, or brilliant.— v. t. To expre by laughing; to ridicule or deride. — re. An expre ion of mirth, etc., peculiar to the human species; laughter.— Laugh'able, a. Fitted excite laughter; droll; ludicrous; comical.— Laugh'"ing-gas, re. (Chem.) Nitrous oxide, or protoxide nitrogen, —which ordinarily produces exhilaration when inhaled. — stock, re. An object of ridicule.