Area of a river exposed at low tide (8)
I believe the answer is:
sandbank
(Other definitions for sandbank that I've seen before include "Shallows in sea/river" , "Shallow area in sea or river" , "Problem for river navigation" , "Deposit" .)
I believe the answer is:
sandbank
(Other definitions for sandbank that I've seen before include "Shallows in sea/river" , "Shallow area in sea or river" , "Problem for river navigation" , "Deposit" .)