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:
break something up
Meaning / Example:
1. to destroy something. > The storm broke the docks up on the lake. > The police broke up the gambling ring.
2. to put an end to something. > The police broke the fight 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