Definition of "Circle" :
noun: movement once around a course
noun: any circular or rotating mechanism
"The machine punched out metal circles."
noun: a curved section or tier of seats in a hall or theater or opera house; usually the first tier above the orchestra
"They had excellent seats in the dress circle."
noun: street names for flunitrazepan
noun: a road junction at which traffic streams circularly around a central island
noun: an unofficial association of people or groups
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
"He calculated the circumference of the circle."
noun: something approximating the shape of a circle
"The chairs were arranged in a circle."
verb: form or draw a circle around
"Encircle the errors."
verb: travel around something
"Circle the globe."
verb: move in a circular path above (someone or something)
"The plane circled, looking for a landing spot."