I. cone¹ /kəʊn $ koʊn/ noun [countable]
[Date: 1400-1500; Language: French; Origin: Latin conus, from Greek konos]

1. a solid or hollow shape that is round at one end, has sloping sides, and has a point at the other end, or something with this shape

2. an object shaped like a large cone that is put on a road to prevent cars from going somewhere or to warn drivers about something

3. the fruit of a pine or fir tree ⇒ conifer

4.
a piece of thin cooked cake, shaped like a cone, that you put ice cream in, or a cone like this with ice cream in it

5. technical a cell in your eye that is shaped like a cone, that helps you see light and colour ⇒ rod

[TahlilGaran] Dictionary of Contemporary English ▲

II. cone² verb
cone something ↔ off phrasal verb British English
to put a row of orange cones around an area to prevent people or cars from going there, for example during building work

[TahlilGaran] Dictionary of Contemporary English ▲