お袋
おふくろ · ofukuro · JLPT N1 · noun
mother
👜 お (polite prefix) + 袋 (bag): mom as the bag that holds and carries you
A casual word for your own mother, often used by men. 袋 means bag, an old metaphor for the womb that holds a child. お is a polite prefix.
袋 — 代 (dài, phonetic) + 衣 (clothing)
袋 is a semantic-phonetic compound. The bottom 衣 'clothing/cloth' gives the meaning, since bags were originally made of cloth, while 代 on top supplies the sound 'dài'. It has long meant 'bag, sack, pouch'.