| No. | Item | Definition |
|---|---|---|
| 1. | acclimatize | adjust to higher altitude |
| 2. | altimeter | instrument measuring altitude |
| 3. | altitude | height above sea level |
| 4. | anchor | fixed point for securing rope |
| 5. | arete | sharp narrow mountain ridge |
| 6. | ascender | device for climbing rope |
| 7. | ascent | an upward climb |
| 8. | avalanche | sudden slide of snow |
| 9. | balaclava | close-fitting head and face cover |
| 10. | basecamp | main camp for an expedition |
| 11. | belay | to secure a climber with rope |
| 12. | bergschrund | crevasse near glacier head |
| 13. | bivouac | temporary camp without shelter |
| 14. | bootpack | packed trail made by boots |
| 15. | boulder | large detached rock |
| 16. | buttress | projecting rock formation on mountain |
| 17. | carabiner | metal clip for climbing gear |
| 18. | chimney | vertical crack climbed inside |
| 19. | cirque | bowl-shaped mountain hollow |
| 20. | col | low pass between peaks |
| 21. | cornice | overhanging drifted snow edge |
| 22. | couloir | steep narrow snow gully |
| 23. | crampon | spiked traction device for boots |
| 24. | crevasse | deep crack in glacier ice |
| 25. | descender | device for controlled rope descent |
| 26. | descent | a downward climb |
| 27. | down jacket | insulated jacket with down |
| 28. | edging | using boot or ski edge |
| 29. | exposure | risk from steep drop nearby |
| 30. | face | the steep side of mountain |
| 31. | figure eight | common knot and descender shape |
| 32. | firn | old compacted granular snow |
| 33. | fixed rope | rope left in place |
| 34. | foothold | place to step securely |
| 35. | front-pointing | using crampon front points |
| 36. | frostbite | freezing injury to tissue |
| 37. | fuel | energy source for stove |
| 38. | gaiter | cover protecting lower leg |
| 39. | glacier | slow-moving mass of ice |
| 40. | glissade | controlled slide down snow |
| 41. | goggles | protective eyewear for snow |
| 42. | GPS | satellite navigation device |
| 43. | gully | narrow steep channel |
| 44. | handhold | place to grip with hand |
| 45. | hardpack | firm compacted snow surface |
| 46. | harness | straps worn for rope attachment |
| 47. | haul | pull gear or person upward |
| 48. | headlamp | lamp worn on the head |
| 49. | headwall | steep upper cliff or slope |
| 50. | helmet | protective headgear |
| 51. | hypothermia | dangerously low body temperature |
| 52. | ice axe | tool for snow and ice |
| 53. | ice screw | threaded protection for ice |
| 54. | icefall | broken cascading glacier section |
| 55. | kick step | step made by kicking snow |
| 56. | knife-edge | extremely narrow sharp ridge |
| 57. | lead | climb first on the rope |
| 58. | ledge | narrow shelf on rock |
| 59. | map | drawn representation of terrain |
| 60. | mittens | warm hand coverings |
| 61. | moraine | ridge of glacial debris |
| 62. | notch | narrow gap in ridge |
| 63. | nut | wedged metal climbing protection |
| 64. | objective hazard | danger independent of climber |
| 65. | overhang | rock projecting outward above |
| 66. | pass | route through mountains |
| 67. | peak | a mountain’s pointed top |
| 68. | piton | metal spike for protection |
| 69. | posthole | sink deeply into soft snow |
| 70. | powder | light loose fresh snow |
| 71. | protection | gear that helps stop falls |
| 72. | prusik | friction hitch for rope |
| 73. | pulley | wheel device for hauling |
| 74. | rappel | to descend by rope |
| 75. | retreat | withdraw from the climb |
| 76. | ridge | a narrow elevated crest |
| 77. | rockfall | falling rocks from above |
| 78. | rope | strong line for climbing safety |
| 79. | route | the planned way up |
| 80. | runout | distance before protection catches |
| 81. | scramble | climb using hands and feet |
| 82. | scree | loose rocky slope debris |
| 83. | self-arrest | stop a fall with axe |
| 84. | serac | tower of broken glacier ice |
| 85. | slab | smooth broad rock surface |
| 86. | snowfield | broad area covered in snow |
| 87. | spur | minor ridge projecting outward |
| 88. | summit | the top of a mountain |
| 89. | tent | portable fabric shelter |
| 90. | topo | route diagram or map |
| 91. | trailbreaking | making a path through snow |
| 92. | trailhead | starting point of a trail |
| 93. | traverse | move sideways across slope |
| 94. | trekking pole | pole used while hiking |
| 95. | turnaround | point to stop and return |
| 96. | verglas | thin glaze of ice |
| 97. | weather window | brief period of good weather |
| 98. | webbing | flat strong woven strap |
| 99. | whiteout | blinding snowy low-visibility conditions |
| 100. | yaktrax | traction device for icy walking |