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

偉功[ikou] great deed
遺功[ikou] works following the deceased
気功[kikou] breathing exercise
九仞の功[kyuujinnokou] spectacular success
勲功[kunkou] merits

軍功[gunkou] meritorious war service
蛍雪の功[keisetsunokou] the fruit of diligent study
功業[kougyou] exploit
功罪[kouzai] both good and bad
功績[kouseki] achievements