### Clue: Trouble ahead – also hot during growth ahead (9)
### Answer: TOOTHACHE 
 ### Explanation: Definition: Trouble ahead
  TOO(also) **plus** {H($$h$$ot, as displayed on your hot/cold water taps) **contained in**(during) TACHE(short for moustache,the growth on head,ahead,an Araucarian liberty?)}
Answer:  A problem,trouble in the head,ahead – same usage as in the wordplay, but in a different part of the head.