Meaning | A shape that is curved and without sharp angles. |
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Narrower | bulb | Anything with a round shape resembling a teardrop |
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coil, whorl, roll, curl, curlicue, ringlet, gyre, scroll | A round shape formed by a series of concentric circles (as formed by leaves or flower petals) |

cone, conoid, cone shape | A shape whose base is a circle and whose sides taper up to a point |

cylinder | A surface generated by rotating a parallel line around a fixed line |

disk, disc, saucer | Something with a round shape resembling a flat circular plate |

rim | The shape of a raised edge of a more or less circular object |

sphere | A solid figure bounded by a spherical surface (including the space it encloses) |

sphere | A three-dimensional closed surface such that every point on the surface is equidistant from the center |

spheroid, ellipsoid of revolution | A shape that is generated by rotating an ellipse around one of its axes |

torus, toroid | A ring-shaped surface generated by rotating a circle around an axis that does not intersect the circle |

whirl, swirl, vortex, convolution | The shape of something rotating rapidly |

Broader | shape, form | The spatial arrangement of something as distinct from its substance |
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