Term: mackerel shark: fierce pelagic and oceanic sharks
Broader: elasmobranch: any of numerous fishes of the class Chondrichthyes characterized by a cartilaginous skeleton and placoid scales: sharks; rays; skates | Unrelated: connaraceae: mostly tropical climbing shrubs or small trees; closely related to Leguminosae
Broader: elasmobranch: any of numerous fishes of the class Chondrichthyes characterized by a cartilaginous skeleton and placoid scales: sharks; rays; skates | Unrelated: metric space: a set of points such that for every pair of points there is a nonnegative real number called their distance that is symmetric and satisfies the triangle inequality
Broader: elasmobranch: any of numerous fishes of the class Chondrichthyes characterized by a cartilaginous skeleton and placoid scales: sharks; rays; skates | Unrelated: ancient history: knowledge of some recent fact or event that has become so commonly known that it has lost its original pertinence
Broader: elasmobranch: any of numerous fishes of the class Chondrichthyes characterized by a cartilaginous skeleton and placoid scales: sharks; rays; skates | Unrelated: telephone bell: electric bell that rings to signal a call
Broader: elasmobranch: any of numerous fishes of the class Chondrichthyes characterized by a cartilaginous skeleton and placoid scales: sharks; rays; skates | Unrelated: skullcap: a herbaceous plant of the genus Scutellaria which has a calyx that, when inverted, resembles a helmet with its visor raised
Broader: elasmobranch: any of numerous fishes of the class Chondrichthyes characterized by a cartilaginous skeleton and placoid scales: sharks; rays; skates | Unrelated: new waver: a film maker who follows New Wave ideas
Broader: elasmobranch: any of numerous fishes of the class Chondrichthyes characterized by a cartilaginous skeleton and placoid scales: sharks; rays; skates | Unrelated: vacuousness: indicative of or marked by mental vacuity and an absence of ideas
Broader: elasmobranch: any of numerous fishes of the class Chondrichthyes characterized by a cartilaginous skeleton and placoid scales: sharks; rays; skates | Unrelated: zucchini: small cucumber-shaped vegetable marrow; typically dark green
Broader: elasmobranch: any of numerous fishes of the class Chondrichthyes characterized by a cartilaginous skeleton and placoid scales: sharks; rays; skates | Unrelated: orchidaceae: enormous cosmopolitan family of perennial terrestrial or epiphytic plants with fleshy tubers or rootstocks and unusual flowers
Broader: elasmobranch: any of numerous fishes of the class Chondrichthyes characterized by a cartilaginous skeleton and placoid scales: sharks; rays; skates | Unrelated: roller: Old World bird that tumbles or rolls in flight; related to kingfishers