From Longman Dictionary of Contemporary Englishkill two birds with one stonekill two birds with one stoneDOto achieve two things with one action → kill
Examples from the Corpus
kill two birds with one stone• Adding five examples to the chapters that at present lack them would kill two birds with one stone.• By promoting these new investors, Mr Alphandéry could kill two birds with one stone.• Lleland was obviously out to kill two birds with one stone.• Thorpey said it'd kill two birds with one stone.• Well, now we can kill two birds with one stone.• Deedee killed two birds with one stone, both shopping and looking for a shop of her own to rent.• In trying to play matchmaker and kill two birds with one stone, I nearly annihilated three. 