Trade on the coast of Kent (4)
I believe the answer is:
deal
'trade' is the definition.
(I know that trade can be written as deal)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for deal that I've seen before include "Loss of life" , "Soft wood or slang bargain" , "Sawn wood" , "Act of business" , "Hand out playing cards" .)