Related Clues:
- Elephant tusk material
- Material from tusks
- Hard black wood
- Material from tusks of certain mammals
- Dark hardwood
- Tusk substance
- Boyne (anag)
- Heavy hard wood, usually black
- Material from elephant's tusks
- Hard wood used for black piano keys and in cabinetwork
- Hard creamy-white dentine used for making ornaments
- Hard dark wood
- Ivory partner
- Wood for 36 keys
- Timber reordered by one