媎 (mí):
1. Anciently the same as "姐" (sister), a term used to refer to one's mother (dialect, in Shu, one calls mother "姐").
古同“姐”,对母亲的称呼(方言,蜀谓母曰姐)。
2. (Noun) This character is formed via phonetic composition, combining the "女" (female) element with the sound from "且". The primary meaning: an alternate name for mother.
(形声。从女,且声。本义:母亲的别称)
3. Dialectally, it retains the same meaning. In ancient Shu, people referred to their mothers as "姐".
〈方〉∶同本义。古代蜀人称母为姐,蜀谓母曰姐。——《说文》。段玉裁注:“方言也,其字当蜀人所制。”