n. & v.
n. (prec. by the) 1 the remaining part or parts; the others; the remainder of some quantity or number (finish what you can and leave the rest). 2 Brit. Econ. the reserve fund, esp. of the Bank of England. 3 hist. a rally in tennis.
v.intr. 1 remain in a specified state (rest assured). 2 (foll. by with) be left in the hands or charge of (the final arrangements rest with you). and all the rest (or the rest of it) and all else that might be mentioned; etcetera. for the rest as regards anything else.
[ ME f. OF reste rester f. L restare (as RE-, stare stand) ]