Term: trephination: an operation that removes a circular section of bone from the skull
Broader: abstraction: a general concept formed by extracting common features from specific examples | Unrelated: light brown: a brown that is light but unsaturated
Broader: abstraction: a general concept formed by extracting common features from specific examples | Unrelated: field day: (military) a day for military exercises and display
Broader: abstraction: a general concept formed by extracting common features from specific examples | Unrelated: jujube: spiny tree having dark red edible fruits
Broader: abstraction: a general concept formed by extracting common features from specific examples | Unrelated: taskmistress: a woman taskmaster
Broader: abstraction: a general concept formed by extracting common features from specific examples | Unrelated: herbal medicine: a medicine made from plants and used to prevent or treat disease or promote health
Broader: abstraction: a general concept formed by extracting common features from specific examples | Unrelated: chrome yellow: any of several yellow pigments consisting of normal lead chromate and other lead compounds
Broader: abstraction: a general concept formed by extracting common features from specific examples | Unrelated: marine glue: glue that is not water soluble
Broader: abstraction: a general concept formed by extracting common features from specific examples | Unrelated: milline: an advertising measure; one agate line appearing in one million copies of a publication
Broader: abstraction: a general concept formed by extracting common features from specific examples | Unrelated: can of worms: a source of unpredictable trouble and complexity
Broader: abstraction: a general concept formed by extracting common features from specific examples | Unrelated: window blind: a blind for privacy or to keep out light