Lane's co-worker (4)
I believe the answer is:
kent
'lane's co-worker' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for kent that I've seen before include "Home county" , "English garden" , "Knew (Scottish)" , "Part of 1 25 [KING LEAR]" , "One of the Home Counties" .)