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:
light up
Meaning / Example:
1. to become brighter. > Suddenly, the sky lit up like day. > The room lit up as the fire suddenly came back to life.
2. [for someone] to become interested and responsive in something. > We could tell from the way Sally lit up that she recognized the man in the picture.