- leftover (adj.)
[leftover 词源字典]
- also left-over, "remaining, not used up," 1890, from left + over. The noun meaning "something left over" is from 1891; leftovers "excess food after a meal" (especially if re-served later) is from 1878; in this sense Old English had metelaf.[leftover etymology, leftover origin, 英语词源]