<p><strong>Noun:</strong></p><ul><li>a closed plane curve consisting of all points at a given distance from a point within it called the center.</li><li>the portion of a plane bounded by such a curve.</li><li>any circular or ringlike object, formation, or arrangement: a circle of dancers.</li><li>a ring, circlet, or crown.</li><li>the ring of a circus.</li><li>a section of seats in a theater: dress circle.</li><li>the area within which something acts, exerts influence, etc.; realm; sphere: A politician has a wide circle of influence.</li><li>a series ending where it began, especially when perpetually repeated; cycle: the circle of the year.</li><li>an argument ostensibly proving a conclusion but actually assuming the conclusion or its equivalent as a premise; vicious circle.</li><li>a complete series forming a connected whole; cycle: the circle of the sciences.</li><li>a number of persons bound by a common tie; coterie: a literary circle; a family circle.</li><li>an administrative division, especially of a province.</li><li>a parallel of latitude.</li><li>(formerly) the orbit of a heavenly body.</li><li>a sphere or orb: the circle of the earth.</li><li>a ring of light in the sky; halo.</li></ul><p><strong>Verb:</strong></p><ul><li>to enclose in a circle; surround; encircle: Circle the correct answer on the exam paper.</li><li>to move in a circle or circuit around; rotate or revolve around: He circled the house cautiously.</li><li>to change course so as to pass by or avoid collision with; bypass; evade: The ship carefully circled the iceberg.</li><li>to move in a circle or circuit: The plane circled for half an hour before landing.</li></ul>