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

タクシーに乗る[takushiininoru] to take a taxi
タクシー乗り場[takushiinoriba] taxi rank
バスに乗る[basuninoru] to take the bus
悪乗り[warunori] overdoing
移乗[ijou] transferring (to another ship, etc.)

一人乗り[ichininnori] single seater (e.g. boat, aeroplane, airplane)
一天万乗[ittenbanjou] the whole realm
一番乗り[ichibannori] leader of a charge
遠乗り[toonori] long ride
下乗[gejou] dismounting