Did sink stand up on flat surface? (5)
I believe the answer is:
ebbed
'did' is the definition.
The definition and answer can be both to do with motion as well as being past participle verbs.
Perhaps they are linked in a way I don't understand?
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for ebbed that I've seen before include "Flowed back or receded" , "Diminished" , "Went out like tide" .)