Definitions
1.nounA dome-shaped ornamental structure located on top of a larger roof or dome.
2.nounA small turret, usually on a hatch of an armoured fighting vehicle.
3.nounAn upward-projecting mass of plutonic rock extending from a larger batholith.
4.nounA solid formed by joining two polygons, one (the base) with twice as many edges as the other, by an alternating band of isosceles triangles and rectangles.
5.nounA type of furnace used for smelting.
6.nounA small cap over a structure that is shaped like a dome or inverted cup."the posterior cupola of the cartilaginous nasal capsule"
7.nounA small viewing window in the top of the caboose for looking over the train, or the part of the caboose where one looks through this window.