### Clue: Mate in Sydney holding large hammer (7)
### Answer: CLOBBER 
 ### Explanation: Definition: hammer
  COBBER(in Sydney, Australian slang for a close male friend,mate, not to be confused with one of the opposite sex) **containing**(holding) L(abbrev. for $$l$$­arge, as in clothing sizes)
Defn: As a verb, to beat severely,hammer