Leave a tip (4)
I believe the answer is:
dump
This might be a double definition.
'leave' is the first definition.
The answer and definition can be both to do with motion as well as being verbs in their base form.
Maybe you can see a link between them that I don't see?
'a tip' is the second definition.
(I know that tip can be written as dump)
Can you help me to learn more?
(Other definitions for dump that I've seen before include "Get rid of" , "Unload" , "Public rubbish tip" , "Throw away" , "waste ground?" .)