Definitions:

1. A specialized tool used primarily in mountaineering and ice climbing for travel on snow, ice, and glaciers. NOUN
   • The ice ax served as a lifeline, connecting the climber to the unforgiving mountain.
2. An ax used by mountain climbers for cutting footholds in ice. NOUN
   • The ice ax became an extension of the climber's body, helping him navigate the frozen wilderness.

Synonyms:

• ice axe
• ice pick
• piolet