hold: what you try to do when you wake at 4am after having overrehydrated yourself.

Related:

• Essentials: everything you left at home. -- "An Alphabet for Mountaineers",
  Climbing...
• handhold: what two climbers do during long bivouacs on narrow ledges.
  "An Alphabet for Mountaineers", Climbing...
• heading: going to the latrine. -- "An Alphabet for Mountaineers",
  Climbing...
• vertical feet: what a mountaineer has on the ends of his legs when lying flat on his back.
  "An Alphabet for Mountaineers", Climbing...
• carabiner: oversized safety pin to hold up a diaper seat.
  "An Alphabet for Mountaineers", Climbing...
• falling barometer: barometer that has slipped out of a pocket when climbing.
  "An Alphabet for Mountaineers", Climbing...
• sling: versatile strap dating to biblical times. when david the israelite descended into the vale of elah,
  after a hard day of climbing, he used a sling to slay...
• brake bar: tavern near a climbing area where everyone stops after a hard day climbing.
  see barometer. -- "An Alphabet for Mountaineers",...
• fall: good time of year for climbing. -- "An Alphabet for Mountaineers",
  Climbing...