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  1. Cay - Wikipedia

    A cay (/ kiː, keɪ / KEE, KAY), also spelled caye or key, is a small, low- elevation, sandy island on the surface of a coral reef. Cays occur in tropical environments throughout the Pacific, Atlantic, and …

  2. Cay | Coral Reef, Marine Ecosystem & Caribbean | Britannica

    cay, small, low island, usually sandy, situated on a coral reef platform. Such islands are commonly referred to as keys in Florida and parts of the Caribbean. Sand cays are usually built on the edge of …

  3. CAY Definition & Meaning - Merriam-Webster

    The meaning of CAY is a low island or reef of sand or coral.

  4. CAY Definition & Meaning | Dictionary.com

    CAY definition: a small low island; key. See examples of cay used in a sentence.

  5. What Is a Cay and How Is One Formed? - Biology Insights

    Jan 11, 2026 · A cay is a small, low-elevation island that forms in tropical marine environments, almost always in association with an underlying coral reef platform. These landforms are typically found in …

  6. CAY | definition in the Cambridge English Dictionary

    CAY meaning: 1. a small, low island in tropical regions, made of rock, sand, or coral (= a hard substance formed…. Learn more.

  7. Definition of "cay" - Words Defined

    A cay (pronounced 'key') is a small, low‑lying island or sandbar, usually formed by the accumulation of sand and coral, often found in tropical or subtropical lagoons and open seas.

  8. Cay - Simple English Wikipedia, the free encyclopedia

    A cay ( "key" English pronunciation: /kiː/) is a small, low island made of mostly sand or coral and on top of a coral reef, a very small island. The English word cay comes from the Spanish word cayo and this …

  9. Cay - Wikiwand

    A cay (/ ˈkiː, ˈkeɪ / KEE), also spelled caye or key, is a small, low- elevation, sandy island on the surface of a coral reef. Cays occur in tropical environments throughout the Pacific, Atlantic, and Indian …

  10. Cay Definition & Meaning | YourDictionary

    Cay definition: A small, low island composed largely of coral or sand.