Definition of cay in English:

cay

Syllabification: cay
Pronunciation: /kē, kā
 
/

noun

A low bank or reef of coral, rock, or sand. Compare with key2.
More example sentences
  • Nansha is contested by PRC, Vietnam, Taiwan, Malaysia and the Philippines and comprises 104 islands, reefs, cays and banks.
  • Parola Island and the Lawak, Panata and Rizal Reefs are among a group of islands, reefs and cays claimed by the Philippines in the Spratlys.
  • Heron is a tiny Barrier Reef coral cay, of only 17 hectares, in the Capricornia Group of islands of Australia's Great Barrier Reef.

Origin

late 17th century: from Spanish cayo 'shoal, reef', from French quai 'quay'.

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Word of the day ween
Pronunciation: wiːn
verb
be of the opinion; think or suppose