Longman Dictionary of Contemporary English - slop

~1 v slopped, slopping 1 if liquid in a container slops, it moves around or over the edge in an uncontrolled way + around/about/over  (The water slopped around in the bucket.) 2 to make liquid do this  (slop sth over/into etc)  (He slopped his beer all over her skirt.) 3 AmE to feed slop to pigs slop about phr v BrE informal 1 to spend time being lazy  (We spent the day slopping about the house.) 2 to play or move around in mud, dirty water etc slop out phr v when prisoners slop out, they empty their toilet buckets - slopping-out n ~2 also slops plural n 1 food waste that is used to feed animals 2 BrE liquid waste from food or drinks  (Empty all your slops into the bucket over there.) 3 BrE dirty water or urine 4 food that is too soft and tastes bad  (They served up some kind of slop I just couldn't eat.)