Device That Blows Warm Air Onto Wet Locks
Puzzle 13 of Bath Time Piece of Cake Pack
Question is: Device That Blows Warm Air Onto Wet Locks
and the answer is: HAIRDRYER
Word Meaning:
HAIRDRYER — (chiefly UK) A small electrical appliance for drying hair, by generating a stream of hot air.
Definitions from Wiktionary.