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.
Phrasal Verb:
run down
Meaning / Example:
1. to come down, running or very quickly; to go down, running or very quickly. > I need to talk to you down here. Can you run down?
2. [for something] to lose power and stop working. > The clock ran down because no one was there to wind it. > The toy ran down and wouldn't go again until it had been wound.
3. to become worn or dilapidated. > The property was allowed to run down, and it took a lot of money to fix it up.
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.