surplus or disused articles, e.g. furniture, that are stored away
Knowledge, which we often see to be no better than lumber in men of dull understanding, was, in him, true, evident, and actual wisdom — James Boswell
NAmer timber or logs, esp when dressed for use
perhaps from Lombard in the obsolete sense ‘pawnshop’, from the use of pawnshops as storehouses of disused property. In the medieval period many pawnbrokers and moneylenders were Lombards
lumber3verb trans
Brit, informal to encumber or saddle (somebody) with something