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
gobble someone or something up
to eat someone or something completely and rapidly.
The wolf said that he was going to gobble the little girl 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.
A compilation of 50 phrasal verbs.