reef 1 
(rēf)
(rēf)n.
1. A strip or ridge of rocks, sand, or coral that rises to or near the surface of a body of water.
2. A vein of ore.
3. Chiefly Western US A long craggy ridge or rocky escarpment.
[Obsolete Dutch rif, possibly from Old Norse, ridge.]
reefy adj.
- microfiber
- microfiche
- microfilament
- microfilamentous
- microfilaria
- microfilarial
- microfilm
- microform
- microfossil
- microgamete
- microgametophyte
- microglia
- microglial
- microglossia
- microgram
- micrograph
- micrographic
- microgravity
- microgreens
- microhabitat
- microinject
- microinjection
- microinstruction
- microlending
- microlith