A phrasal verb is a verb that is made up of a main verb together with an adverb or a preposition, or both. Typically, their meaning is not obvious from the meanings of the individual words themselves.
There are many phrasal verbs in English. Here are some examples:
She has always LOOKED DOWN ON me.
(She thought of me with a feeling of superiority)
The police are LOOKING INTO the crime.
(The police are investigating the crime)
They BROKE UP last week.
(They ended their relationship last week)
I always PICK my kids UP at school.
(I always collect my kids from their school)