to become completely dry; to dry dishes with a towel after you have washed them
to become completely dry
During the drought the river dried up.
if a supply of sth dries up, there is gradually less of it until there is none left
As she got older, offers of modelling work began to dry up.
to suddenly stop talking because you do not know what to say next
British
to dry dishes with a towel after you have washed them
I'll wash and you can dry up.
Definitions from the Oxford Advanced Learner's Dictionary, 9th edition