一 (ichi) means “one” | MotiTan Japanese Dictionary

More examples

一から三まで数えます。ichi ka ra san ma de kazo e ma su

I count from one to three.

りんごを一つください。ri n go o hito tsu ku da sa i

Please give me one apple.

Identifies a single unit or the first position in a count.

ひとつhitotsu: A native Japanese word used when counting one thing without naming a specific counter.

数を数えるときの最初の数で、個数や順序が一つであることを表す語。sū o kazo e ru to ki no sai sho no kazu de ko sū ya jun jo ga hito tsu de a ru ko to o arawa su go

The Japanese numeral 一 (ichi, "one") is a Sino-Japanese borrowing from Chinese 一 (yī, "one"), whose Middle Chinese form is reconstructed as ʔjit.

The numeral 一 (ichi) changes reading in common counters: 一人 (hitori) means one person and 一つ (hitotsu) means one thing.