strong arm; powerful arm
Literally a physically strong or stout arm; often used in contexts of physical strength or sports.
The ball thrown from his powerful arm was fast.
noun, noun which may take the genitive case particle 'no'
capable person; strong leader; ability to get things done
Figurative use: a person with strong leadership or the ability to push through difficult tasks; often used in business or political contexts.
The new president is known for being a strong leader and carried out reforms one after another.
No one can oppose his forceful way of doing things.
Standard kanji spelling; 剛 suggests strength and toughness.
Alternate spelling; 豪 suggests powerful or heroic quality. Both spellings are used.
Compound of 剛 (strong, firm) or 豪 (powerful, heroic) and 腕 (arm). The figurative sense likely developed from the image of a strong arm that can accomplish difficult tasks.