cone

From Middle French cone, from Latin conus (“cone, wedge, peak”), from Ancient Greek κῶνος (kônos, “cone, spinning top, pine cone”)

Pine cone (5)

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• Rhymes: -əʊn

A cone (1)–(3)

cone (plural cones)

1. (geometry) A surface of revolution formed by rotating a segment of a line around another line that intersects the first line.
2. (geometry) A solid of revolution formed by rotating a triangle around one of its altitudes.
3. (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.
4. Anything shaped like a cone.[1]
5. The fruit of a conifer.[1]
6. An ice cream cone.[1]
7. A traffic cone
8. A unit of volume, applied solely to marijuana and only while it is in a smokable state; roughly 1.5 cubic centimetres, depending on use.
9. Any of the small cone-shaped structures in the retina.[1]
10. (slang) The bowl piece on a bong.
11. (slang) The process of smoking cannabis in a bong.
12. (slang) A cone-shaped cannabis joint.
13. (slang) A passenger on a cruise ship (so-called by employees after traffic cones, from the need to navigate around them)
14. (category theory) An object V together with an arrow going from V to each object of a diagram such that for any arrow A in the diagram, the pair of arrows from V which subtend A also commute with it. (Then V can be said to be the cone’s vertex and the diagram which the cone subtends can be said to be its base.)
15. A shell of the genus Conus, having a conical form.
16. A set of formal languages with certain desirable closure properties, in particular those of the regular languages, the context-free languages and the recursively enumerable languages.

• (geometry): conical surface
• (ice cream cone): cornet, ice cream cone

• quean
• queen

cone (third-person singular simple present cones, present participle coning, simple past and past participle coned)

1. (pottery) To fashion into the shape of a cone.
2. (frequently followed by "off") To segregate or delineate an area using traffic cones
   • 2006, Great Britain: Department for Transport, “D5 Single Carriageway Roads”, in Traffic Signs Manual, Part 1‎, The Stationery Office, →ISBN, page 140:

     The area occupied by the works should be coned off and the usual advance warning signs should be provided on all approaches

• Coen, Econ., Noce, ceno-, coen-, cœn-, econ, once

From Latin cornua.

cone f (plural cones)

1. horn

cōne

1. vocative singular of cōnus

• cone in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition, 1883–1887)

1560s, from Middle French cone (16c.) or directly from Latin conus "a cone, peak of a helmet," from Greek konos "cone, spinning top, pine cone," perhaps from PIE root *ko- "to sharpen" (cognates: Sanskrit sanah "whetstone," Latin catus "sharp," Old English han "stone").

cone m (plural cones)

1. (geometry, etc.) cone (conical shape)