fist jam

(climbing) A climbing technique where the fist is forced into a crack and clenched.

Japanese Meaning

（クライミングの技法）拳を割れ目に強く突っ込んで握り、保持や前進のために用いる技術

During the climb, she relied on a secure fist jam to ascend the narrow crack.

登攀中、彼女は細い割れ目に拳を押し込み握って保持する安定した技術に頼って登った。

Sense（1）

(climbing) A climbing technique where the fist is forced into a crack and clenched.

fist jams

（ plural ）