Real Dictionary

furnish
verb: If you furnish a room or building, you put furniture and furnishings into it.
verb: If you furnish someone with something, you provide or supply it.

furnish in American English
to supply, provide, or equip with whatever is necessary or useful; esp., to put furniture into (a room, apartment, etc.)
noun: paper pulp and any ingredients added to it prior to its introduction into a papermaking machine
transitive verb: to supply (a house, room, etc.) with necessary furniture, carpets, appliances, etc

furnish in British English
to provide (a house, room, etc) with furniture, carpets, etc