A smooth, rounded anatomical structure that resembles an acorn; often refers to the tip of the penis or the head of the clitoris.
From Latin 'glans' meaning acorn. The Romans named this anatomical part after the acorn's shape, and the term extended to other rounded body structures.
When you look at the anatomy, the name makes perfect sense—the glans really does look like an acorn, which is why Romans didn't need a fancy medical term; they just called it what it resembled.
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