Circle round the globe (7)

I believe the answer is:

equator

'circle round the globe' is the definition.
(I've seen this before)

This is the entire clue.

(Other definitions for equator that I've seen before include "Line separating northern and southern hemispheres" , "Earth's north-south dividing line" , "Hemisphere divider" , "Imaginary circle round the earth" , "It divides the hemispheres" .)

I've seen this clue in The Times and The Guardian.

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