busilis

== Spanish == === Etymology === Originated as part of a misreading – in an ancient text – of Latin in diēbus illīs (“in those days”) as *in die busillis (“in the day of busilis”), with the last word interpreted as a proper noun. === Noun === busilis m (plural busilis) crux (critical part of an argument or issue) === See also === intríngulis === Further reading === “busilis”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8.1, Royal Spanish Academy [Spanish: Real Academia Española], 15 December 2025