Term: black opal: a dark colored opal with internal reflections of green or red
Broader: crystal: a solid formed by the solidification of a chemical and having a highly regular atomic structure | Unrelated: maraschino: cherry preserved in true or imitation maraschino liqueur
Broader: crystal: a solid formed by the solidification of a chemical and having a highly regular atomic structure | Unrelated: angulation: the precise measurement of angles
Broader: crystal: a solid formed by the solidification of a chemical and having a highly regular atomic structure | Unrelated: zebu: domesticated ox having a humped back and long horns and a large dewlap; used chiefly as a draft animal in India and east Asia
Broader: crystal: a solid formed by the solidification of a chemical and having a highly regular atomic structure | Unrelated: allometry: the study of the relative growth of a part of an organism in relation to the growth of the whole
Broader: crystal: a solid formed by the solidification of a chemical and having a highly regular atomic structure | Unrelated: fine-tooth comb: a method of examining in minute detail
Broader: crystal: a solid formed by the solidification of a chemical and having a highly regular atomic structure | Unrelated: western big-eared bat: bat of western North America having extremely large ears
Broader: crystal: a solid formed by the solidification of a chemical and having a highly regular atomic structure | Unrelated: great: a person who has achieved distinction and honor in some field
Broader: crystal: a solid formed by the solidification of a chemical and having a highly regular atomic structure | Unrelated: monologue: a long utterance by one person (especially one that prevents others from participating in the conversation)
Broader: crystal: a solid formed by the solidification of a chemical and having a highly regular atomic structure | Unrelated: chestnut blight: a disease of American chestnut trees
Broader: crystal: a solid formed by the solidification of a chemical and having a highly regular atomic structure | Unrelated: gizzard: thick-walled muscular pouch below the crop in many birds and reptiles for grinding food