noun
wedge for securing objects together
A physical wedge inserted between parts to tighten or secure a joint, especially in woodworking or construction.
大工は間の楔を打ち込んで、柱をしっかり固定した。
The carpenter drove in a wedge to firmly secure the pillar.
noun
Metaphorical use: a person or thing that serves as a link or bond between two parties, often in relationships or alliances.
彼女は二人の間の楔となって、チームをまとめた。
She acted as a bond between the two, bringing the team together.