Definition of guernseys:
(n) :
An island, the second-largest of the Channel Islands.
(n) :
A cow of a breed of dairy cattle originally bred in Guernsey.
(n) :
A knitted fisherman’s sweater of a type made on the island.
(n) :
A long-sleeved shirt worn by sportsmen, especially in rugby codes (historically).
(n) :
An unincorporated community in California.
(n) :
A city in Iowa.