Main Entry: ³reef

Function: noun

Etymology: Dutch rif, from Middle Dutch, from Old Norse, literally rib; akin to Old English ribb rib — more at rib

Date: 1584

1 a : a chain of rocks or coral or a ridge of sand at or near the surface of water — compare atoll, barrier reef b : a hazardous obstruction
2 : lode, vein

— reefy \ˈrē-fē\ adjective