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

お大事に[odaijini] take care of yourself
暗黒大陸[ankokutairiku] Dark Continent (i.e. Africa)
伊勢大神宮[isedaijinguu] the Grand Shrines of Ise
伊勢大廟[isetaibyou] the Grand Shrines of Ise
偉大[idai] greatness

医科大学[ikadaigaku] medical school
医大[idai] medical university
井の中の蛙大海を知らず[inonakanokawazutaikaiwoshirazu] parochial
一大[ichidai] one large ...
一大事[ichidaiji] serious affair

各市[kakushi] every city
棄市[kishi] execution by decapitation, followed by public display of the body (form of punishment in ancient China)
旧市街[kyuushigai] the old town
魚市場[uoichiba] fish market
京都市[kyoutoshi] Kyoto (city)

競争市場[kyousoushijou] competitive market
見本市[mihonichi] trade fair
互市[goshi] trade
公設市場[kousetsuichiba] public market
国際市場[kokusaishijou] international market

その都度[sonotsudo] each time it happens
旧都[kyuuto] the old capital
京都市[kyoutoshi] Kyoto (city)
京都府[kyoutofu] Kyoto (metropolitan area)
古都[koto] ancient city

好都合[koutsugou] convenient
三大都市[sandaitoshi] the three largest cities
姉妹都市[shimaitoshi] sister cities
主要都市[shuyoutoshi] major city
首都[shuto] capital city