右腕

1. Origins, structure, and basic meaning

• Structure: 右腕 is read as みぎうで and is a noun combining 右, right, with 腕, arm, and carrying both a bodily and a figurative sense.
• Basic usage: It can be the physical right arm that is injured or a trusted aide supporting a manager.

2. Common pitfalls and similar expressions

• Physical arm
  • In 右腕を打つ, it is the actual right arm that was struck.
• Figurative person
  • 店長の右腕として means serving as the manager’s key aide, naturally rendered as right-hand person.