circle

a round shape that has no beginning or end

circlet

a small circle; a ring or round band worn as an ornament, especially on the head

circuit

a path for an electrical current to flow around

circulate

to move around an area or a place. often returning to a starting point

circumference

the distance all the way around a circle

circumflex

bending around; curved

circumnavigate

to go completely around

circumrotate

to turn around like a wheel

circumspect

careful; careful to look all around before doing something

circumvent

to prevent something from happening by careful thinking; to get around something