from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A small, low island composed largely of coral or sand.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A small, low island largely made of sand or coral.
from the GNU version of the Collaborative International Dictionary of English
- n. See key, a ledge.
from The Century Dictionary and Cyclopedia
- n. Same as key. [Rare.]
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a coral reef off the southern coast of Florida
Alteration (influenced by quay) of Spanish cayo, probably from Taino.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Arawakan via Spanish cayo. (Wiktionary)