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:
lumber along
Meaning:
to lope or walk along heavily and awkwardly.
Example:
The horses were lumbering along very slowly because they were tired out.
Phrasal verbs consists of a basic verb + another word or words. The two or three words that make up a phrasal verb form a short 'phrase' - which is why we call them 'phrasal verbs'.