Webster 1913 Edition
jack + ass.]
The male ass; a donkey.
A conceited dolt; a perverse blockhead; – disparaging and offensive.
a three-masted vessel, with only the foremast square-rigged; a barkentine.–
Jack rabbit, under 2d
any species of penguin of the genus–
Spheniscus, of which several are known. One species (
Spheniscus demersus) inhabits the islands near the Cape of Good Hope; another (
Spheniscus Magellanicus) is found at the Falkland Islands. They make a noise like the braying of an ass; – hence the name.
Webster 1828 Edition