Are yams and sweet potatoes the same?
c.1300, from Anglo-French grece, from Old French gresse, craisse "grease, fat" (Modern French graisse), from Vulgar Latin *crassia "(melted) animal fat, grease," from Latin crassus "thick, solid, fat" (cf. Spanish grasa, Italian grassa). Grease paint, used by actors, attested from 1888. Grease monkey "mechanic" is from 1928.
c.1300, from grease (n.). Sense of "ply with bribe or protection money" is 1520s, from notion of grease the wheels "make things run smoothly" (mid-15c.). To grease (someone's) palm is from 1580s. Expression greased lightning, representing something that goes very fast, is American English, by 1832.
To shoot, esp to kill by shooting: He has a gun and might try to grease you (WWII armed forces)Related Terms
[the verb to grease, ''to bribe,'' is found by 1557; last two senses fr greasegun, a WWII submachine gun]
thick, oily lubricant consisting of inedible lard, the rendered fat of waste animal parts, or a petroleum-derived or synthetic oil containing a thickening agent