1. phrasal verb
If you chase up something that is needed or needs dealing with, you find it or find out what is being done about it.
[V n P] ⇒ When I didn't hear from the suppliers or receive a refund, I chased the matter up.
[V P n] ⇒ The authority can chase up the source of the pollution and demand that the owner clean
2. phrasal verb → chase If you chase someone up, you look for them and find them because you want them to do something or give you something.
[V P n] ⇒ ...the story of a man who comes to Hollywood to chase up a client who has defaulted
on a debt. [Also V n P]
COBUILD Advanced English Dictionary. Copyright © HarperCollins Publishers