Term: window: a transparent panel (as of an envelope) inserted in an otherwise opaque material
Broader: panel: sheet that forms a distinct (usually flat and rectangular) section or component of something | Unrelated: photometer: measuring instrument for measuring the luminous intensity of a source by comparing it (visually or photoelectrically) with a standard source
Broader: panel: sheet that forms a distinct (usually flat and rectangular) section or component of something | Unrelated: united states customary system: the system of weights and measures based on the foot and pound and second and pint that dates back to colonial America but differs in some respects from the British Imperial System; today in the United States this system exists side by side with the SI system
Broader: panel: sheet that forms a distinct (usually flat and rectangular) section or component of something | Unrelated: minim: a British imperial capacity measure (liquid or dry) equal to 1/60th fluid dram or 0.059194 cubic centimeters
Broader: panel: sheet that forms a distinct (usually flat and rectangular) section or component of something | Unrelated: monoxide: an oxide containing just one atom of oxygen in the molecule
Broader: panel: sheet that forms a distinct (usually flat and rectangular) section or component of something | Unrelated: lowland burrowing treefrog: terrestrial burrowing nocturnal frog of grassy terrain and scrub forests having very hard upper surface of head; of the United States southwest
Broader: panel: sheet that forms a distinct (usually flat and rectangular) section or component of something | Unrelated: sand sage: silver-haired shrub of central and southern United States and Mexico; a troublesome weed on rangelands
Broader: panel: sheet that forms a distinct (usually flat and rectangular) section or component of something | Unrelated: auction: a variety of bridge in which tricks made in excess of the contract are scored toward game; now generally superseded by contract bridge
Broader: panel: sheet that forms a distinct (usually flat and rectangular) section or component of something | Unrelated: estate of the realm: a major social class or order of persons regarded collectively as part of the body politic of the country (especially in the United Kingdom) and formerly possessing distinct political rights
Broader: panel: sheet that forms a distinct (usually flat and rectangular) section or component of something | Unrelated: piano: a keyboard instrument that is played by depressing keys that cause hammers to strike tuned strings and produce sounds
Broader: panel: sheet that forms a distinct (usually flat and rectangular) section or component of something | Unrelated: python: large Old World boas