one of the two long body parts from shoulder to hand
She lifted the box with her strong arm.
彼女は強い腕で箱を持ち上げた。
the part of clothing that covers the arm
The shirt arm was too long for him.
そのシャツの袖は彼には長すぎた。
the side part of a chair where you rest your arm
He rested his arm on the chair arm while thinking.
彼は考えながら腕を椅子の肘掛けに置いた。
a long moving part on a machine
The robot arm picked up the heavy part.
ロボットアームが重い部品を持ち上げた。
a narrow extension of water or land
We sailed into the calm arm of the bay.
私たちは湾の静かな入り江に航海した。
a division of a large organization
The company's research arm developed new technology.
同社の研究部門が新技術を開発した。
to provide weapons for fighting
The soldiers armed themselves for battle.
兵士たちは戦いのために武装した。
to prepare a bomb to explode
The expert armed the bomb carefully.
専門家が慎重に爆弾を作動させた。