Cycle racing as a hobby or occupation (7)

I believe the answer is:

pursuit

I'm a little stuck... Click here to teach me more about this clue!

'occupation' is the definition.
(thesaurus)

I don't understand how the rest of the clue works.

(Other definitions for pursuit that I've seen before include "The chase or the occupation" , "courting?" , "Hobby" , "See 1" , "Occupation; cycle race" .)

I've seen this clue in the Evening Standard.

Want a hint initially instead of a full solution? Install my app