阦:
1. Ancient same as "阳" (yang).
古同“阳”。
2. The southern side of a mountain or the northern side of water. The south side of the mountain is yang, and the north side of water is also yang. — From "Gu Liang Zhuan, Year 28 of Duke Xi"
山的南面或水的北面。山南为阳,水北为阳。——《谷梁传·僖公二十八年》
3. The side exposed to sunlight, the sunny part. When cutting the axle, one must measure its yin and yang. Yang is dense and firm, while yin is sparse and soft. — From "Zhou Li, Kao Gong Ji, Wheel Workers"
日光照得见的一面,向阳部分。凡斩毂之道,必矩其阴阳。阳也者,稹理而坚。阴也者,疏理而柔。——《周礼·考工记·轮人》