noun
- plural of reef: ridges of rock, coral, or sand at or near the surface of water
verb
- third person singular present of reef: to reduce the area of a sail by folding or rolling part of it
Usage: nautical
Examples
- The coral reefs in the Caribbean are home to many colorful fish.
- Ships must navigate carefully around the rocky reefs.
- The Great Barrier Reef is one of the world’s largest coral reefs.
- Divers love exploring tropical reefs.
- The captain reefs the mainsail during the storm.
- She reefs the jib to slow down the boat.