### Clue: Charles pockets one pound, backing 3 (7)
### Answer: CHABLIS 
 ### Explanation: Definition: 3
 CHAS(diminutive of the name, Charles) **containing**(pockets) **reversal of**(…, backing) [ I(Roman numeral for "one") + LB(abbrev. for the pound unit of weight) ].
Defn: Answer to 3 across … wine.