one, 1 / the first in order, foremost / the beginning / the best / a kind of; one of something / (card games) an ace / unity / the bottom string of a shamisen or other Japanese musical instrument

commuter pass / season ticket / monthly ticket

regular service, scheduled flight

periodic

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

the best or top person, such as the best performer in a company, or a leading expert

each person

Alternative form of 一々

fourth (4th), number four

the ninth