Dirty words 'litter' his vocabulary. [=his vocabulary includes many dirty words; he says a lot of dirty words]
('chiefly US') a 'litter box' = ('Brit') a 'litter tray' [=a container holding litter for a cat]
Of all the cars on the market, this one is clearly 'the pick of the litter'. [=the best one]
(..) You will And if they die, you will bury them yourselves. What about you? I'm not a Stark. Get on. What is it? The runt of the litter-- that one's yours, snow. As your brother, I feel it's my duty to warn you: You worry too much. - It's starting to show. - And you never worry about anything. (..)2011 TvShow: Game of Thrones Title: Winter Is Coming Season: 1 Episode 1
(..) It's great that we'll soon be connected. With a king who'll be all-time adored. Of course, quid pro quo, you're expected To take certain duties on board The future is littered with prizes And though I'm the main addressee The point that I must emphasize is You won't get a sniff without me! (..)1994 The Lion King
(..) We're feet from the main sewer line. -And the bad news? -We've broken our last shovel. Right. Rico, you're on litter patrol. We need shovels. And find more Popsicle sticks. We don't want to risk another cave-in. And me, Skipper? I want you (..)2005 Madagascar