expression, ichidan verb
give momentum; give a boost; encourage; spur; stimulate
Used for giving physical momentum (e.g., swinging, throwing) or figurative momentum (e.g., to a conversation, economy, or person's motivation).
バットを振るときは、まず軽く弾みをつけるといい。
When swinging a bat, it's good to first give it a little momentum.
彼の一言が会議に弾みをつけた。
His remark gave momentum to the meeting.