### Clue: Bill, aged, shivering like poor Tom (tragically) (5)
### Answer: ACOLD 
 ### Explanation: Definition: shivering like poor Tom (tragically)
AC (account, so "bill") + OLD ("aged") 
*In Act 3, Scene 4 of *King Lear,* Edgar declares "Bless thy five wits! *Tom's a-cold*"