Westminsterian
/ˌwɛs(t)mɪnˈstɪərɪən/adjective
Of, relating to, or characteristic of the British Parliament at Westminster. rare before late 20th cent.
noun
A present or former pupil of Westminster School in London; = Westminster. rare.
Origin
Mid 17th century (in an earlier sense). From the name of Westminster + -ian.