Kyūjitai form of 壱 (number one)

one, 1 (used in legal documents)

Short for 壱岐国 (Iki no kuni, “Iki Province”).

one

very, excellent

January / (archaic) the first month of the lunar calendar / one month

(literary) one day, 24 hours / (literary) the daytime, the period from dawn until dusk / (literary) (figuratively) a short period of time

culture medium

(grammar) first person

the first / (mathematics, attributive) the quality of being first-degree