neddy /ˈnɛdi/ noun6 •A donkey or ass. •(UK, slang) A horse, especially a racehorse.Some of the boys whipped off their hats and laughingly smacked their neddies′ rumps, for we hated using spurs on the poor thirsty beggars. — 1932 •An idiot; a stupid or contemptible person.The trouble is that the neddies in the Board of Trade would probably approve it. — 1967 •[usually plural] (informal, slang) Horsepower.No chance in hell, even if it was a Gurney Eagle engine. The only way you can get those sort of neddies out of a 302 Windsor would be boost. — 2007 •[in the plural] (Australia, slang) The horse races. •(slang, no longer used) A cosh.[…] it was Dan Mayne who broke his skull with a "neddy." — 1887 formsneddies