(grammar) a verbal conjugation class in which the verb stem ends in -i and consists of four alternating bases: -i, -iru, -ire, and -iyo/-iro

Kyūjitai form of 三位一体 (“Trinity”)

(Christianity) the Trinity

a journey of a thousand miles begins with a single step

an anthology of one hundred poems by one hundred poets, one poet for each poem

short for 小倉百人一首 (Ogura Hyakunin Isshu): a famous "one hundred poems anthology", used as the basis of certain card games

Clipping of 一千一夜物語 (Issen'ichiya Monogatari, “One Thousand and One Nights”).

polyandry (plurality of husbands at the same time)

first discoverer (used especially in reference to the discovery of a dead body)

the Tokyo metropolitan region; the area surrounding and including the capital of Japan in Eastern Tokyo