noun

• (countable) Any of several species of trees yielding a very dark wood.
• African blackwood (Dalbergia melanoxylon), of Africa
• Australian blackwood (Acacia melanoxylon), of eastern Australia
• Bombay blackwood (Dalbergia latifolia), of India
• Haematoxylum campechianum, a tree from Mexico.
• (uncountable) The very dark wood of such trees.
• Any of many places around the world.
• A number of places in the United Kingdom:
• A hamlet north-east of Loch Carron, Highland council area, Scotland (OS grid ref NG9543).
• An outer suburb west of Cumbernauld, North Lanarkshire council area, Scotland (OS grid ref NS7274).
• A village in South Lanarkshire council area, Scotland (OS grid ref NS7943).
• A town and community in Caerphilly county borough, Wales (OS grid ref ST1797).
• A number of places in the United States:
• An unincorporated community in Gordon County, Georgia.
• A census-designated place in Gloucester Township, Camden County, New Jersey.
• An unincorporated community in Orange County, North Carolina.
• An unincorporated community and coal town in Wise County, Virginia.
• A suburb of Adelaide, in the City of Mitcham, South Australia.
• A village in the Shire of Moorabool, north-west of Melbourne, Victoria, Australia
• An English and Scottish habitational surname derived from the placename.
• (bridge) A bidding convention in contract bridge, used to explore the partnership's possession of aces, kings and in some variants the queen of trumps, to judge more precisely whether slam is likely to be a good contract.