Sailor one associated with bowls? (4)
I believe the answer is:
jack
I believe this clue is a double definition.
'sailor' is the first definition.
(informal term for a sailor)
'one associated with bowls?' is the second definition.
(jack is a type of ball used in bowls)
(Other definitions for jack that I've seen before include "Dog akin to 9" , "Playing card; sailor" , "Car lift" , "Car-lifting tool" , "Name for sailor" .)