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

愛唱[aishou] fondness for singing
愛唱歌[aishouka] (one's) favourite song
愛唱曲[aishoukyoku] favourite song
暗唱[anshou] recitation
暗唱番号[anshoubangou] personal identification number

詠唱[eishou] aria
歌唱[kashou] song
吟唱[ginshou] recital
合唱[gasshou] chorus
合唱隊[gasshoutai] chorus