noun
piton
A metal peg driven into rock or ice to attach a rope or carabiner during climbing. Compare with ハーケン (Haken), which is a similar German-derived term sometimes used interchangeably.
from French
See also: ハーケン
クライミングでは、ピトンを岩に打ち込んで安全を確保する。
In climbing, you hammer pitons into the rock to secure safety.