From The Collaborative International Dictionary of English v.0.44 [gcide]:
1. A room for business or social conversation, for the reception of guests, etc. Specifically: (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. --Piers Plowman. (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. [1913 Webster +PJC]
From WordNet (r) 2.0 [wn]:
From Moby Thesaurus II by Grady Ward, 1.0 [moby-thes]:
44 Moby Thesaurus words for "parlor": agency, atelier, barbershop, beauty parlor, beauty shop, bench, best room, butcher shop, company, concern, corporation, desk, drawing room, establishment, facility, firm, foreroom, front room, house, installation, institution, living room, loft, lounge, organization, reception room, salon, saloon, shop, sitting room, solarium, studio, sun parlor, sunroom, sweatshop, work site, work space, workbench, workhouse, working space, workplace, workroom, workshop, worktable
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