from the GNU version of the Collaborative International Dictionary of English
- n. a room in which unused furniture or other lumber is kept.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a storeroom in a house where odds and ends can be stored (especially furniture)
Sorry, no etymologies found.
Among other monstrosities in this lumber room was a largish blackjapanned box, excellently and ingeniously made some sixty or seventy years ago, and fitted with every imaginable object.
So in the lumber room there were bad Sir Edwin Landseers and pathetic William Henry Hunt birds’ nests: and other Academy stuff, enough to frighten the daughter of an R.A. She determined to look through it one day, and clear it all.