The definition of an isle is an island, particularly a small one.(noun)
An example of an isle is one of the tiny islands in the island nation of the Philippine Islands.
See isle in Webster's New World College Dictionary
Origin: ME ile < OFr ile, earlier isle < ML isla, contr. < L insula < ? (terra) in salo, (land) in the sea < salum, sea: the form isle became general in the Renaissance, infl. by L insula
See isle in American Heritage Dictionary 4
noun Abbr. I.
Origin: Middle English ile
Origin: , from Old French isle
Origin: , from Vulgar Latin *īsula
Origin: , from Latin īnsula.
Learn more about isle