chockstone
nounB2Định nghĩa theo từ loại
Danh từ
nounPlural noun:
chockstones
- 1.
A stone, ranging in size from a boulder to a pebble, which has become wedged in a vertical fissure or cleft.
- 2.
(climbing) A metal wedge or nut, threaded on a wire, used in rock climbing for protection by wedging it into a crack in the rock.
Nguồn gốc từ
From chock + stone. The climbing sense derives from the wedges' use as artificial chockstones.