Cockney workman, a joiner (3)
I believe the answer is:
and
I believe this is a double definition.
'cockney workman' is the first definition.
('hand' - hand is a kind of workman - said with a cockney accent, dropping the 'H')
'a joiner' is the second definition.
(I've seen this in another clue)
(Other definitions for and that I've seen before include "moreover" , "Joiner or dandies" , "& 18 You bet!" , "See 20" , "Together with" .)