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

意馬心猿[ibashinen] (being unable to control) one's worldly desires and passions
猿轡をかます[sarugutsuwawokamasu] to gag someone
猿も木から落ちる[sarumokikaraochiru] even monkeys fall from trees
猿回し[sarumawashi] showman who trains performing monkeys
猿ぐつわ[sarugutsuwa] (mouth) gag

猿股[sarumata] undershorts
猿芝居[sarushibai] monkey show
猿まね[sarumane] indiscriminate imitation (lit: monkey imitator)
猿人[enjin] ape man