LAUGHING a.
on European gull (Xema ridibundus); -- called also pewit, black cap, red-legged gull, and sea crow. (b) An American gull (Larus atricilla). In summer the head is nearly black, the back slate color, and the five outer primaries black. -- Laughing hyena (Zoöl.), the spotted hyena. See Hyena. -- Laughing jackass (Zoöl.)…