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ravenous extremely hungry; famished; starved. [3 definitions]
ravin see raven2.
ravine a deep, steep-sided cut in the land, esp. one carved by the flow of water.
raving wild and unrestrained; frenzied; delirious. [3 definitions]
ravioli (used with a sing. or pl. verb) small pouches of pasta filled with ground meat, cheese, or the like.
ravish to overwhelm with emotion or sensation; enrapture. [3 definitions]
ravishing causing great delight, esp. by beauty.
raw being in an uncooked or unprocessed state. [7 definitions]
rawboned having a bony, thinly fleshed body; gaunt; lean.
rawhide untanned leather, esp. cattle skin. [2 definitions]
rawin the monitoring of upper-air wind currents using a balloon fitted with radar or a radio direction-finding device (acronym for "radio/wind").
raw material material or a product in its natural or original state, before processing or assembling.
raw silk silk that has been taken directly from the cocoon.
ray1 a thin beam of radiation, esp. light. [3 definitions]
ray2 any of various fishes having cartilaginous skeletons, flattened bodies, large pectoral fins, and long narrow tails.
rayed having, or being in the form of, rays or raylike extensions.
ray flower any of the flowers around the border of the head of a composite plant such as the daisy.
Rayleigh wave a wave on the surface of a solid, such as that caused on the surface of the earth by an earthquake.
Raynaud's disease a vascular disease causing numbness and discoloration of the tips of the hands and feet, often caused by exposure to cold or by stress.
rayon a thread made by converting a solution of a natural pulp, usu. cellulose, into filament by extruding through spinnerets. [2 definitions]
raze to knock down or tear down (a structure); level.