Mom
来自Big Physics
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late 19th century: abbreviation of momma. Compare with mum1.
wiktionary
Abbreviation of momma.
etymonline
mom (n.)
"mother," 1867, American English, perhaps a shortening of mommy; also see mamma. Adjectival phrase mom and pop to indicate a small shop or other business run by a married couple is by 1946.
