A phrase that combines a verb with a preposition or adverb or both and that functions as a verb whose meaning is different from the combined meanings of the individual words
rinse someone or something down
to wash or clean someone or something with water or other fluid.
I rinsed him down for an hour and still didn't get the smell of skunk off him.
Phrasal verbs, also called two-word verbs, are idiomatic expressions wherein the second element of the verb (the adverb or particle) is not necessarily predictable.
A compilation of 50 phrasal verbs.