noun
female pig; sow
Neutral term for a female pig, used in farming or zoological contexts.
この農場ではメス豚を5頭飼育している。
This farm raises five sows.
noun
fat woman; vulgar woman; slut
Strongly derogatory and vulgar slur; often written メス豚. Used to insult a woman's appearance or behavior.
ネットで女性をメス豚呼ばわりするのは許されない。
Calling a woman a 'mesubuta' online is unacceptable.
Compound of メス (female) and 豚 (pig). The derogatory sense is a metaphorical extension comparing a woman to a sow.