Wordnet 3.0
NOUN (1)
1.
a small island;
[syn: isle, islet]
The Collaborative International Dictionary of English v.0.48:
Islet \Is"let\, n. [OF. islette (cf. F. [^i]lot), dim. of isle.]
A little island.
[1913 Webster]
WordNet (r) 3.0 (2006):
islet
n 1: a small island [syn: isle, islet]