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.
Phrasal Verb:
drown someone or an animal out [for a flood]
Meaning:
to drive someone or an animal away from home.
Example:
The high waters almost drowned the farmers out last year.
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