carnal knowledge
noun/ˌkɑːnl ˈnɒlɪdʒ/
/ˌkɑːrnl ˈnɑːlɪdʒ/
[uncountable] (old-fashioned or law)- sexual intercourse (= the physical activity of sex, usually describing the act of a man putting his penis inside a woman’s vagina)
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carnal knowledge