charter member

Noun

Canada US

(Canada, US) An original member of an organization; a member named in an organization's charter.

Japanese Meaning

組織の設立時に最初に加入した会員。定款などに記載された正式な会員。

As a charter member of the neighborhood association, Maria helped draft the bylaws and organize the first community picnic.

町内会の創設メンバーとして、マリアは規約の作成や最初の地域ピクニックの開催を手伝いました。

Sense（1）

(Canada, US) An original member of an organization; a member named in an organization's charter.

charter members

（ plural ）