Webster's Revised Unabridged Dictionary · 1913

Gown

Gown (goun) , noun

[Old English goune, prob. from Welsh gwn gown, loose robe, akin to Ir. gunn, Gael. gùn; compare Old French gone, prob. of the same origin.]

1.
A loose, flowing upper garment
(a)
The ordinary outer dress of a woman, especially one that is full-length/ex>.
(b)
The official robe of certain professional men and scholars, as university students and officers, barristers, judges, etc.; hence, the dress of peace; the dress of civil officers, in distinction from military.
He Mars deposed, and arms to gowns made yield. — Dryden
(c)
A loose wrapper worn by gentlemen within doors; a dressing gown.
2.
Any sort of dress or garb.
He comes... in the gown of humility. — Shakespeare
3.
An evening gown.
4.
The students and faculty of a college and university, as opposed to the local inhabitants not connected to the university; -- used often in the phrase “town and gown”, referring to interactions between the university and the local townspeople; as, a town and gown dispute.