What is the meaning of circle?

noun

• Ellipse in which the two axes are of equal length; a plane curve generated by one point moving at a constant distance from a fixed point.
  • usage: "he calculated the circumference of the circle"
• An unofficial association of people or groups.
  • usage: "the smart set goes there"; "they were an angry lot"
  • synonyms: set, band, lot
• Something approximating the shape of a circle.
  • usage: "the chairs were arranged in a circle"
• Movement once around a course.
  • usage: "he drove an extra lap just for insurance"
  • synonyms: lap, circuit
• A road junction at which traffic streams circularly around a central island.
  • usage: "the accident blocked all traffic at the rotary"
  • synonyms: traffic circle, rotary, roundabout
• Street names for flunitrazepan.
  • synonyms: R-2, Mexican valium, rophy, rope, roofy, roach, forget me drug
• A curved section or tier of seats in a hall or theater or opera house; usually the first tier above the orchestra.
  • usage: "they had excellent seats in the dress circle"
  • synonyms: dress circle
• Any circular or rotating mechanism.
  • usage: "the machine punched out metal circles"
  • synonyms: round

verb

• Travel around something.
  • usage: "circle the globe"
• Move in circles.
  • synonyms: circulate
• Form a circle around.
  • usage: "encircle the errors"
  • synonyms: encircle