According to Merriam-Webster, pussy simultaneously carried three “vulgar” meanings as far back as 1699. At that time, pussy could mean: 1) vulva, 2a) sexual intercourse, and 2b) the female partner in sexual intercourse. It was not until 1942 that pussy branched out to include a weak or cowardly man or boy. As in, “Stop being a pussy.” More @Wikipedia
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