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

音叉[onsa] tuning fork
交叉[kousa] crossing
叉手網[sadeami] dip net
叉銃[sajuu] stacked arms
三叉[mitsumata] three-pronged (fork)

三叉路[sansaro] three-forked road
三仙叉[sansensa] trident dagger
指叉[sasumata] two-pronged weapon for catching a criminal
二叉[futamata] bifurcation