Implement in a suit? (5)
I believe the answer is:
spade
I believe this clue is a double definition.
'implement' is the first definition.
(spade is a kind of implement)
'a suit?' is the second definition.
(I've seen this in another clue)
'in' acts as a link.
(Other definitions for spade that I've seen before include "Small shovel" , "Gardening tool (maybe so called)" , "black suit" , "home in Kent" , "Digger" .)