cone

• 指从圆形底面逐渐收拢到顶点的立体图形或物体，也可指自然界或工程中类似锥形的结构。

A noun referring to a solid or hollow object that tapers from a circular base to a point, or a cone-shaped structure in nature or technology.

1. Cone-shaped objectA2formal

   Any object that has a shape with a circular base and a pointed top.

   圆锥体

   • The traffic cone was placed on the road to warn drivers.
   • She bought an ice cream cone from the shop.
   • The party hat was shaped like a cone.

   同义词conoidpinnaclespiretaper

2. Geometric shapeB1formal

   A three-dimensional shape with a flat circular base and sides that taper to a point.

   圆锥

   • The math teacher drew a cone on the board.
   • A cone has one vertex and one circular face.
   • The volume of a cone is one-third of a cylinder's volume.

3. Plant coneB2formalscientific

   A cone-shaped mass of scales or bracts that contains the reproductive structures of certain plants, such as pines.

   球果

   • Pine cones fall from the tree in autumn.
   • The cone of the spruce tree contains seeds.
   • Botanists study the cone scales to identify tree species.

   同义词strobilestrobilus

4. Eye cone cellC1formalmedical

   A type of photoreceptor cell in the retina of the eye that is responsible for color vision and functions best in bright light.

   视锥细胞

   • Cone cells allow humans to see colors.
   • Damage to the cone cells can cause color blindness.
   • The retina contains millions of cone and rod cells.

• 动词，指使某物呈圆锥形，或用圆锥形物体击打；也用于俚语语境。

A verb meaning to shape something into a cone or to hit with a cone-shaped object; also used in slang contexts.

1. Shape into a coneB2formal

   To form or shape something into a cone-like structure.

   使成锥形

   • The potter coned the clay on the wheel.
   • She coned the paper to make a makeshift funnel.
   • The machine cones the metal sheets for industrial use.

   同义词narrowpointsharpentaper