A straw plaiting used for bonnets and hats, made from the straw of a particular kind of wheat, grown for the purpose in Tuscany, Italy; -- so called from Leghorn, the place of exportation.

A leghorn is a hat made of straw, usually having a broad, soft brim.

(Livorno): A port city in central Italy, Livorno is the capitol of Livorno province in the Tuscany region.

a breed of chicken, and foghorn describes the character's piercing,monotonous voice

Pronounced “leggern”. A breed of chicken that lays white eggs, often used for commercial egg production.