köken: From Latin quintus. Pushed out Old Spanish cinquén(o), quintén(o) in line with the re-Latinization of many other numerals – compare Ladino sinkeno. The meanings “18-year-old boy” and “conscript” comes from the days of King John II of Castile, who decreed that one boy in five were obliged to serve in the army.
aile: bajo quinto, en el quinto coño, en la quinta puñeta, entrar en quintas, los quintos infiernos, primo quinto, puta de quinta, quinta columna, quinta rueda, quinto infierno
köken: Etymology tree Proto-Indo-European *pénkʷe Proto-Indo-European *-tós Proto-Indo-European *penkʷtós Proto-Italic *kʷenktos Latin quīnctus Latin quīntus From earlier quīnctus, from Proto-Italic *kʷenktos, from Proto-Indo-European *penkʷtós, from *pénkʷe + *-tós. By surface analysis, quīnque (“five”) + -tus. Compare Ancient Greek πέμπτος (pémptos), Proto-Germanic *fimftô, Proto-Balto-Slavic *pénktas.