Definition of "Leghorn"

Leghorn¹

/ˈlɛɡhɔːn/

proper noun
1. (dated) The city of Livorno in Italy.

Leghorn²

noun
plural Leghorns
1. Alternative letter-case form of leghorn
  Quotations
  Among the light breeds there are probably more good strains of White Leghorn than any other variety. The Brown Leghorn is not quite so popular but is capable of high yields …. The Black Leghorn is another breed which has enjoyed popularity.
  1962, C. Arthur Pearson, Pictorial Poultry-Keeping, 2nd edition, Cox & Wyman Ltd, page 42