• A steep bowl-shaped hollow occurring at the upper end of a mountain valley, especially one forming the head of a glacier or stream.
  • A ring; a circle.
  • A circus.
  • A circle; specifically, a circle regarded as inclosing any space or surrounding any object or group of objects.
  • Same as <internalXref urlencoded="comb">comb</internalXref>.
  • A circle; a circus; a circular erection or arrangement of objects.
  • A kind of circular valley in the side of a mountain, walled around by precipices of great height.
  • A curved <xref>depression</xref> in a <xref>mountainside</xref> with steep walls, forming the end of a <xref>valley</xref>.
  • a steep-walled semicircular basin in a mountain; may contain a lake
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