cylinder
surface formed by the points at a fixed distance from a given straight line called the axis of the cylinder; one of the most basic curvilinear geometric shapes
rota
rotating cylinder built into a wall, used for exchanging mail and food with cloistered clergy
open cylinder
does not include either top or bottom elements, and therefore has surface area (lateral area) L = 2πrh
gudgeon pin
pin that holds connecting rod to piston head
disk
short cylinder whose radius is many times its length
right circular cylinder
cylinder whose generatrices are perpendicular to the bases