† demi-isleObs. =prec. 1609Holland Amm. Marcell. xxii. viii. 200 That Biland, or demy Isle which the Sindi inhabit.1610― Camden's Brit. i. 189 From S. Michaels mount southward..there is thrust forth a bi-land or demi-Isle.1776Mickle tr.Camoen's Lusiad 284 Southward sea-girt she forms a demi-isle.