also: くにん
noun
nine people
Standard counter for people; used when counting exactly nine individuals.
九人の学生が教室にいます。
There are nine students in the classroom.
予約は九人でお願いします。
Reservation for nine people, please.
Compound of 九 (kyuu, 'nine') + 人 (nin, counter for people). The reading くにん is an older or dialectal variant.