n. 1.ellipse in which the two axes are of equal length 2.an unofficial association of people or groups 3.something approximating the shape of a circle 4.movement once around a course 5.a road junction at which traffic streams circularly around a central island 6.street names for flunitrazepan 7.a curved section or tier of seats in a hall or theater or opera house 8.any circular or rotating mechanism circle v. 1.travel around something 2.move in circles 3.be around 4.form a circle around