Reef - Definition
reef
n 1: a submerged ridge of rock or coral near the surface of the
water
2: a rocky region in the southern Transvaal in northeastern
South Africa; contains rich gold deposits and coal and
manganese [syn: Witwatersrand, Rand, Reef]
3: 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
v 1: lower and bring partially inboard; "reef the sailboat's
mast"
2: roll up (a portion of a sail) in order to reduce its area
3: reduce (a sail) by taking in a reef