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

火燵掛布[kotatsugake] cover for kotatsu
引っ掛る[hikkakaru] to be caught in
引っ掛ける[hikkakeru] to hang (something) on (something)
押掛ける[oshikakeru] to intrude on
押掛け客[oshikakekyaku] uninvited guest

下掛る[shimogakaru] to talk about indecent things
下駄掛け[getagake] wearing wooden clogs
夏掛け[natsugake] summer-use futon
掛り[kakari] starting
掛かり合う[kakariau] to have dealings with