REEF

Definition of REEF

  1. (verb)lower and bring partially inboard
  2. (verb)roll up (a portion of a sail) in order to reduce its area
  3. (verb)reduce (a sail) by taking in a reef
  4. (noun)a submerged ridge of rock or coral near the surface of the water
  5. (noun)one of several strips across a sail that can be taken in or rolled up to lessen the area of the sail that is exposed to the wind