reef
noun, verb
noun


1 a long line of rocks or sand near the surface of the sea:
a coral reef the Great Barrier Reef

2 a part of a sail that can be tied or rolled up to make the sail smaller in a strong wind
verb [VN] (technical) to make a sail smaller by tying or rolling up part of it:
They set sail with the sails reefed against the strong winds.

• Từ đồng nghĩa / Synonyms: Witwatersrand   Rand   Reef