cone
n//ˈkoʊn//kon, kägla, strut, kotte
(geometry) A surface of revolution formed by rotating a segment of a line around another line that intersects the first line.
(geometry) A solid of revolution formed by rotating a triangle around one of its altitudes.
(topology) A space formed by taking the direct product of a given space with a closed interval and identifying all of one end to a point.
The fruit of a conifer.