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

加特力[katorikku] Catholic (church)
キー入力[kiinyuuryoku] key (input)
苦力[kuurii] coolie
握力[akuryoku] grip (of hand)
圧力[atsuryoku] stress

圧力計[atsuryokukei] manometer
圧力団体[atsuryokudantai] pressure group
圧力調整器[atsuryokuchouseiki] pressure regulator
圧力鍋[atsuryokunabe] pressure cooker
圧力波[atsuryokuha] pressure wave