Laugh"ing(?), a. & n. from Laugh, v. i.
(Zol.), a South American hawk (Herpetotheres cachinnans); -- so called from its notes, which resemble a shrill laugh. --
(Chem.), hyponitrous oxide, or protoxide of nitrogen; -- so called from the exhilaration and laughing which it sometimes produces when inhaled. It is much used as an ansthetic agent. --
(Zol.), the European white-fronted goose. --
(Zol.) (a) A common European gull (Xema ridibundus); -- called also
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. --
(Zol.), the spotted hyena. See Hyena. --
(Zol.), the great brown kingfisher (Dacelo gigas), of Australia; -- called also
giant kingfisher, and
(Zol.), a peculiar owl (Sceloglaux albifacies) of New Zealand, said to be on the verge of extinction. The name alludes to its notes.
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Wed 19th December 2018