[ key, kee ]
/ keɪ, ki /


a small low island; key.

Origin of cay

1700–10; < Spanish cayo; see key2

Can be confused

cay key quay Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for cay

British Dictionary definitions for cay


/ (keɪ, kiː) /


a small low island or bank composed of sand and coral fragments, esp in the Caribbean areaAlso called: key

Word Origin for cay

C18: from Spanish cayo, probably from Old French quai quay
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Science definitions for cay


[ kē, kā ]

A small, low island composed largely of coral or sand. Also called key
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.