Definition of 「脇」:
1. Same meaning as "胁" (xié).
- The same original meaning. "胁" refers to the two sides. — From "Shuō Wén Jiě Zì". Note: It also refers to the area under the armpit. Its bones are referred to as ribs, and in livestock it is called "拍". "Two sides are anxious." — From "Sù Wèn · Zhì Zhēn Yào Dà Lùn". "In battle, the shield is held at the side." — From "Guǎn Zi · Bǎn Fǎ". Note: "The shield is sometimes placed at the side, thus called 'side shield'." "The back, side, lung, and shoulder are above." — From "Yí Lǐ". "Right side holds a large iron hammer." — From Ming dynasty writer Wei Xi's "Dà Tiě Chuí Zhuàn". "Crossing over the side of Tiāndū." — From "Xú Xiá Kè Yóu Jì · Yóu Huáng Shān Jì".
2. Rib.
- "Cao Gonggong heard of his joined side, wanting to see him bare." — From "Zuǒ Zhuàn · Xī Gōng Twenty-Third Year". Note: "Joined side means combined and leaning together."