保姆
bǎo mǔ · HSK 7
nanny
👶🏠 bǎo mǔ = protect + mother — the protecting mother of the household
保 means protect or care for, 姆 means mother or matron. Together they describe the woman who protects and cares for the home and children — a nanny or housekeeper.
保 — person 亻 + 呆 (child/protect phonetic)
Originally an ideograph showing an adult carrying a child on the back, meaning to protect or shield. The right side 呆 evolved from a depiction of a swaddled infant. Over time the meaning broadened from 'protect a child' to 'preserve, guarantee, keep safe.'