noun A solid or hollow object which tapers from a circular or roughly circular base to a point. (stalls selling paper cones full of fresh berries) The dry fruit of a conifer, typically tapering to a rounded end and formed of a tight array of overlapping scales on a central axis which separate to release the seeds. (a cedar cone) One of two types of light-sensitive cell in the retina of the eye, responding mainly to bright light and responsible for sharpness of vision and colour perception.
verb Separate off or mark a road with traffic cones. (part of the road has been coned off)