Term: tourmaline: a mineral that is a complex borosilicate and hydroxide of aluminum containing iron and magnesium and calcium and lithium and sodium; it is usually black but occurs in transparent colored forms that are used as gemstones
Broader: mineral: solid homogeneous inorganic substances occurring in nature having a definite chemical composition | Unrelated: dirtiness: the state of being unsanitary
Broader: mineral: solid homogeneous inorganic substances occurring in nature having a definite chemical composition | Unrelated: inventiveness: the power of creative imagination
Broader: mineral: solid homogeneous inorganic substances occurring in nature having a definite chemical composition | Unrelated: cinnamon bear: reddish-brown color phase of the American black bear
Broader: mineral: solid homogeneous inorganic substances occurring in nature having a definite chemical composition | Unrelated: wind: empty rhetoric or insincere or exaggerated talk
Broader: mineral: solid homogeneous inorganic substances occurring in nature having a definite chemical composition | Unrelated: breaking away: departing hastily
Broader: mineral: solid homogeneous inorganic substances occurring in nature having a definite chemical composition | Unrelated: bumper car: a small low-powered electrically powered vehicle driven on a special platform where there are many others to be dodged
Broader: mineral: solid homogeneous inorganic substances occurring in nature having a definite chemical composition | Unrelated: finishing line: a line indicating the location of the finish of a race
Broader: mineral: solid homogeneous inorganic substances occurring in nature having a definite chemical composition | Unrelated: chalkpit: a quarry for chalk
Broader: mineral: solid homogeneous inorganic substances occurring in nature having a definite chemical composition | Unrelated: biennial: (botany) a plant having a life cycle that normally takes two seasons from germination to death to complete; flowering biennials usually bloom and fruit in the second season
Broader: mineral: solid homogeneous inorganic substances occurring in nature having a definite chemical composition | Unrelated: bastard toadflax: woody creeping parasite of western North America having numerous thick powdery leaves and panicles of small dull-white flowers