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

ランブル鞭毛虫[ranburubenmouchuu] giardia (flagellate protozoan)
ランブル鞭毛虫症[ranburubenmouchuushou] giardiasis
いも虫[imomushi] hornworm (caterpillar of a hawk moth)
益虫[ekichuu] useful insect
円虫類[enchuurui] round worms

夏虫[natsumushi] summer insect
蛔虫[kaichuu] roundworm (Ascaris lumbricoides)
害虫[gaichuu] harmful insect
鈎虫[kouchuu] hookworm
寄生虫[kiseichuu] parasite

米搗き飛蝗[kometsukibatta] Oriental longheaded locust (Acrida cinerea)
精霊飛蝗[shouryoubatta] Oriental longheaded locust (Acrida cinerea)
羽長蝗[hanenagainago] rice grasshopper
精霊飛蝗擬き[shouryoubattamodoki] Gonista bicolor (species of grasshopper resembling the Oriental longheaded locust)

きちきち蝗虫[kichikichibatta] male Oriental longheaded locust (Acrida cinerea)
殿様蝗虫[tonosamabatta] migratory locust (Locusta migratoria)
蝗虫[kouchuu] rice grasshopper (of genus Oxya)
飛び蝗虫[tobibatta] locust swarming