left over is an adjective meaning "not used up". It carries one recorded sense.
not used up
“leftover meatloaf”
“she had a little money left over so she went to a movie”
“some odd dollars left”
“saved the remaining sandwiches for supper”
“unexpended provisions”
Definitions, synonyms and semantic relations for left over come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.