What does the cryptic crossword clue "Climber’s companion putting cold water on fire (3,3)" mean?

The wordplay uses a charade (building blocks). ICE (synonym="cold water") + AXE (synonym="to fire, as in dismiss") = ICEAXE The answer is ICEAXE.

Climber’s companion putting cold water on fire (3,3)

Guardian Cryptic #29419 | 5 Down | 2024-06-26 flower