Webster's Revised Unabridged Dictionary · 1913

Parlor

Parlor , noun

[Old English parlour, parlur, French parloir, Late Latin parlatorium. See Parley.]

1.
A room for business or social conversation, for the reception of guests, etc.
(a)
The apartment in a monastery or nunnery where the inmates are permitted to meet and converse with each other, or with visitors and friends from without.
(b)
In large private houses, a sitting room for the family and for familiar guests, -- a room for less formal uses than the drawing-room. Esp., in modern times, the dining room of a house having few apartments, as a London house, where the dining parlor is usually on the ground floor.
(c)
Commonly, in the United States, a drawing-room, or the room where visitors are received and entertained; a room in a private house where people can sit and talk and relax, not usually the same as the dining room. — Piers Plowman

“In England people who have a drawing-room no longer call it a parlor, as they called it of old and till recently.”

2.
A room in an inn or club where visitors can be received.
Collocations (1)
Parlor car , See Palace car, under Car.