Definitions for: Laughing

Webster (1913) Definition: Laugh"ing, a. & n.
from Laugh, v. i.

Laughing falcon (Zo["o]l.), a South American hawk
(Herpetotheres cachinnans); -- so called from its notes,
which resemble a shrill laughing.

Laughing gas (Chem.), hyponitrous oxide, or protoxide of
nitrogen