triangular prism

three years; the third year / (education) the third school year / (figuratively) a long period of time, several years

three years; triennial / three years old

A district of Aomori Prefecture, Japan, Asia / A town in Sannohe district, Aomori Prefecture, Japan, Asia

three households / the three pairs of head orifices (eye sockets, nostrils, earholes)

three years of age, three years old

(education) third year in senior high school; twelfth grade / (education) third-year student in senior high school

(historical, collective name) Synonym of 三公 (sankō): the three national ministers during the Han dynasty / (historical, collective name) the three judicial branches during the Tang dynasty

three daughters / the third daughter

eye with a large proportion of white, the iris being surrounded by white from the three directions of left, bottom, and right