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:
put something up
Meaning / Example:
1. to build a building, a sign, a fence, a wall, etc. > We'll put a garage up next month. > The city put up a fence next to our house.
2. to store and preserve food by canning or freezing. > This year we'll put some strawberries up.
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