### Clue: Coinage formerly found in swamp withdrawn (5,4)
### Answer: NONCE WORD 
 ### Explanation: Definition: Coinage
 ONCE(formerly/in a time before) **contained in**(found in) **reversal of**(… withdrawn) DROWN(to swamp/to overwhelm).
Defn: A phrase or word specially coined for a single occasion to communicate a concept not otherwise describable, as in Lewis Carroll's "Jabberwock".