筆頭 (ひっとう, hittou) Japanese meaning: brush tip | Kotomoranoun, noun which may take the genitive case particle 'no'
first on a list; top of the list
Used for the first item or name in a written list, such as a roster or ranking.
Usage patterns
〈人〉を筆頭にwith 〈人〉 at the top of the list; led by 〈人〉
Led by Mr. Tanaka, ten employees took part.
〈物〉の筆頭に名前が載るto have one's name listed first on ~ (e.g., a roster)
〈人〉が筆頭に立つto stand at the head/top position (of a group)
He is the person leading the project.
His name is listed first on the list of candidates.
主
largest shareholder; biggest stockholder