弾機 (ばね ぜんまい だんき) — spring (device)
弾機
ば ね
Spring (device)
Spring (in one's legs); bounce
Springboard; impetus
Image search

だんき is used in practice
Search results だんき
断機
cutting the threads on a loom
弾碁
ancient Chinese board game similar to go
暖機
warm up (e.g. engine)
暖気
easy
弾棋
ancient Chinese board game similar to go
煖気
warmth
弾棊
ancient Chinese board game similar to go
