The same word is used in several Romance languages for ‘ruler’ and ‘rule’, the latter sense working as a euphemism for ‘menstruation’. According to Wiktionary, that word is règle in French, and the ‘menstruation’ sense is expressed in the plural, règles, which, of course, is pronounced exactly the same as the singular, since the final -s is silent.
The same happens in Portuguese with regra (‘ruler’ or ‘rule’), used in the plural (regras) to mean ‘menstruation’, though this time the final -s is not silent, so you can actually hear the difference between the two forms. In Spanish, the word is regla, and it can mean ‘menstruation’ when used in the singular, not the plural (unless you’re talking about more than one menstruation).
I’ve read something, somewhere about prepubescent girls believing they’ll have to expel a ruler through their vaginas every month.
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The red lake has been forgotten. A dust devil stuns you long enough to shroud forever those last shards of wisdom. The breeze rocking this forlorn wasteland whispers in your ears, “Não resta mais que uma sombra”.