Term: heavier-than-air craft: a non-buoyant aircraft that requires a source of power to hold it aloft and to propel it
Broader: object: a tangible and visible entity; an entity that can cast a shadow | Unrelated: spirochaeta: the type genus of the family Spirochaetaceae; a bacterium that is flexible, undulating, and chiefly aquatic
Broader: object: a tangible and visible entity; an entity that can cast a shadow | Unrelated: robin: large American thrush having a rust-red breast and abdomen
Broader: object: a tangible and visible entity; an entity that can cast a shadow | Unrelated: trail head: the beginning of a trail
Broader: object: a tangible and visible entity; an entity that can cast a shadow | Unrelated: behaviorism: an approach to psychology that emphasizes observable measurable behavior
Broader: object: a tangible and visible entity; an entity that can cast a shadow | Unrelated: dead duck: something doomed to failure
Broader: object: a tangible and visible entity; an entity that can cast a shadow | Unrelated: general agreement on tariffs and trade: a United Nations agency created by a multinational treaty to promote trade by the reduction of tariffs and import quotas
Broader: object: a tangible and visible entity; an entity that can cast a shadow | Unrelated: sand: a loose material consisting of grains of rock or coral
Broader: object: a tangible and visible entity; an entity that can cast a shadow | Unrelated: freedom of the seas: the right of merchant ships to travel freely in international waters
Broader: object: a tangible and visible entity; an entity that can cast a shadow | Unrelated: auction: the public sale of something to the highest bidder
Broader: object: a tangible and visible entity; an entity that can cast a shadow | Unrelated: flux unit: a measure of the strength of a magnetic field per unit area