I. slop 1 /slɒp $ slɑːp/ BrE AmE verb ( past tense and past participle slopped , present participle slopping )
1 . [intransitive always + adverb/preposition] if liquid slops somewhere, it moves around or over the edge of a container in an uncontrolled way SYN splash :
Coffee slopped over the rim of her cup.
With each wave, more water slopped into the cabin.
2 . [transitive always + adverb/preposition] to put a liquid somewhere in a careless way:
She put the glass down, slopping beer onto the table.
3 . [transitive] American English to feed slop to pigs
slop around/about phrasal verb British English informal
to relax, wearing clothes that are untidy or old:
Jan would never slop around in old jeans.
slop out phrasal verb British English
if prisoners slop out, they empty their toilet buckets
—slopping-out noun [uncountable]
II. slop 2 BrE AmE noun [uncountable] ( also slops [plural] )
[ Date: 1300-1400 ; Origin: Probably from Old English sloppe 'body waste' ]
1 . waste food that can be used to feed animals
2 . British English dirty water or ↑ urine :
Prisoners had to use slop buckets at night.
3 . informal food that is too soft and tastes bad:
Do you actually expect us to eat this slop?