/gray"vee/ , n. , pl. gravies .
1. the fat and juices that drip from cooking meat, often thickened, seasoned, flavored, etc., and used as a sauce for meat, potatoes, rice, etc.
2. Slang.
a. profit or money easily obtained or received unexpectedly.
b. money illegally or dishonestly acquired, esp. through graft.
3. something advantageous or valuable that is received or obtained as a benefit beyond what is due or expected.
[ 1350-1400; 1905-10 for def. 2; ME gravé, gravey gravé, perh. misreading of grané (cf. grain spice) granatus full of grains. See GRAIN, -ATE 1 ]