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

鼎談[teidan] tripartite (three man) talk
鼎談会[teidankai] three-man talk
鼎立[teiritsu] triangular position
鼎立戦[teiritsusen] three-way contest
鼎座[teiza] three people sitting in a triangle

鼎の軽重を問う[kanaenokeichouwotou] to call one's ability into question
鼎革[teikaku] change of dynasty
三者鼎立[sanshateiritsu] three parties (forces) opposing one another
鐘鼎文[shouteibun] bronze-vessel and bell inscriptions