Meaning of “circle” - Learner’s Dictionary

circle

verb uk us /ˈsɜːkl/
MOVE [ I, T ]

to move in a circle, often around something:

Birds circled above the trees.
DRAW [ T ]

to draw a circle around something:

Circle the answer you think is correct.

(Definition of “circle verb” from the Cambridge Learner’s Dictionary © Cambridge University Press)