御三時[osanji] three-o'clock snack
三鞭酒[shanpen] champagne
球面三角法[kyuumensankakuhou] spherical trigonometry
胸三寸[munesanzun] heart
元三[ganzan] New Year's period (January 1st to 3rd)

五十三次[gojuusantsugi] the 53 Toukaidou stages
向こう三軒[mukousangen] one's next three neighbors
降三世明王[gouzanzemyouou] Trailokyavijaya Vidya-raja
再三[saisan] again and again
再三再四[saisansaishi] repeatedly

行殊[gyoujo] event
三人寄れば文殊の知恵[sanninyorebamonjunochie] two heads are better than one
殊に[kotoni] especially
殊の他[kotonohoka] exceedingly
殊勲[shukun] meritorious deeds

殊更[kotosara] intentionally
殊勝[shushou] admirable
特殊[tokushu] special
特殊機能[tokushukinou] special function
特殊鋼[tokushukou] special steel