laughing : Idioms & Phrases

• (Zoöl.), a South American hawk (Herpetotheres cachinnans); so called from its notes, which resemble a shrill laughing.

Webster 1913

• noun inhalation anesthetic used as an anesthetic in dentistry and surgery
  nitrous oxide.
  

WordNet

• (Chem.), hyponitrous oxide, or protoxide of nitrogen = nitrous oxide ; so called from the exhilaration and laughing which it sometimes produces when inhaled. It is much used as an anæsthetic agent. now primarily in dentistry

Webster 1913

• (Zoöl.), the European white-fronted goose.

Webster 1913

• noun small black-headed European gull
  pewit; blackcap; pewit gull; Larus ridibundus.
  

WordNet

• . (Zoöl.) (a) A common 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.

Webster 1913

• noun African hyena noted for its distinctive howl
  spotted hyena; Crocuta crocuta.
  

WordNet

• (Zoöl.), the spotted hyena. See Hyena.

Webster 1913

• noun Australian kingfisher having a loud cackling cry
  kookaburra; Dacelo gigas.
  
• noun almost extinct owl of New Zealand
  laughing jackass; Sceloglaux albifacies.
  

WordNet

• (Zoöl.), the great brown kingfisher (Dacelo gigas), of Australia; called also giant kingfisher, and gogobera.

Webster 1913

• noun almost extinct owl of New Zealand
  laughing jackass; Sceloglaux albifacies.
  

WordNet

• (Zoöl.), a peculiar owl (Sceloglaux albifacies) of New Zealand, said to be on the verge of extinction. The name alludes to its notes.

Webster 1913