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

酒粕[sakekasu] sake lees
粕汁[kasujiru] soup made with sake lees
粕取り[kasutori] shochu made from sake lees
粕漬け[kasuzuke] (fish or vegetables) pickled in sake lees
油粕[aburakasu] oil cake (fertilizer made of oily vegetable dregs)

大豆粕[daizukasu] soybean cake
食べ粕[tabekasu] leavings of a meal
豆粕[mamekasu] bean cake
乄粕[shimekasu] oil cake