Sink about ten with one pot (5)
I believe the answer is:
dixie
'pot' is the definition.
(dixie is a kind of pot)
'sink about ten with one' is the wordplay.
'sink' becomes 'die' (languish).
'about' means one lot of letters goes inside another.
'ten' becomes 'x' (roman numeral).
'with' is a charade indicator (letters next to each other).
'one' becomes 'i' (Roman numeral).
'x' after 'i' is 'ix'.
'die' enclosing 'ix' is 'DIXIE'.
(Other definitions for dixie that I've seen before include "Name given to southern US states" , "military vessel" , "Confederate US states" , "Pan" , "Southern states in the American Civil War" .)