Phrasal verbs are two or more words that together act as a completely new verb with a meaning separate from those of the original words.
battle something out
Meaning / Example:
1. to fight about something to a conclusion.
> They battled the matter out and came to an agreement.
> The two young toughs went into the alley to battle out their differences.
2. to argue something to a conclusion; to struggle to reach a conclusion.
> The Senate and the House disagree on the bill, so they will have to battle a compromise out.
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.