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

五稜郭[goryoukaku] five-sided fortification
五稜堡[goryouho] five-sided fort
三稜鏡[sanryoukyou] prism
山稜[sanryou] mountain ridge

稜線[ryousen] ridgeline
気骨稜稜[kikotsuryouryou] (a person with) strong moral fiber (backbone, determination)
三稜草[mikuri] branched bur-reed (Sparganium erectum)
稜角[ryoukaku] corner

ハッブル望遠鏡[habburubouenkyou] Hubble telescope
胃鏡[ikyou] gastroscope
遠眼鏡[toomegane] spectacles for far-sightedness
凹眼鏡[ougankyou] concave glasses
凹面鏡[oumenkyou] concave mirror

鏡像[kyouzou] reflected image
鏡台[kyoudai] dresser
鏡板[kagamiita] panel
鏡面[kyoumen] mirror surface