<p><strong>Noun</strong></p><ul><li>Geometry: A solid whose surface is generated by a line passing through a fixed point and a fixed plane curve not containing the point, consisting of two equal sections joined at a vertex.</li><li>A plane surface resembling the cross-section of a solid cone.</li><li>Anything shaped like a cone: sawdust piled up in a great cone; the cone of a volcano.</li><li>Ice-cream cone.</li><li>Botany: The more or less conical multiple fruit of the pine, fir, etc., consisting of overlapping or valvate scales bearing naked ovules or seeds; a strobile.</li><li>A similar fruit, as in cycads or club mosses.</li><li>Anatomy: One of the cone-shaped cells in the retina of the eye, sensitive to color and intensity of light.</li><li>One of a series of cone-shaped markers placed along a road, as around an area of highway construction, especially to exclude or divert motor vehicles.</li><li>(In a taper thread screw or bevel gear) an imaginary cone or frustum of a cone concentric to the axis and defining the pitch surface or one of the extremities of the threads or teeth.</li><li>Ceramics: Pyrometric cone.</li></ul><p><strong>Verb</strong></p><ul><li>(Used with object): To shape like a cone or a segment of a cone.</li></ul>