jackass : Idioms & Phrases

• (Naut.), a three-masted vessel, with only the foremast square-rigged; a barkentine.

Webster 1913

• noun a large bat of the southwestern United States having spots and enormous ears
  spotted bat; Euderma maculata.
  

WordNet

• (Zoöl.), the koba.

Webster 1913

• (Zoöl.). See Jack rabbit, under 2d Jack, n.

Webster 1913

• noun small penguin of South America and southern Africa with a braying call
  Spheniscus demersus.
  

WordNet

• (Zoöl.), any species of penguin of the genus Spheniscus, of which several are known. One species (S. demersus) inhabits the islands near the Cape of Good Hope; another (S. Magellanicus) is found at the Falkland Islands. They make a noise like the braying of an ass; hence the name.

Webster 1913

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

WordNet

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

Webster 1913