twenty-first day of the month

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

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

Synonym of 亜酸化窒素 (asanka chisso, “nitrous oxide”); dinitrogen monoxide

polyandry (plurality of husbands at the same time)

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

(zoology) polyandry

a journey of a thousand miles begins with a single step

kill two birds with one stone, do one task and finish two or more goals (literally, “one stone, two birds”)

Alternative form of 十二単