Maybe clock frames black and wooden (6)
I believe the answer is:
timber
'wooden' is the definition.
(timber is wood)
'maybe clock frames black' is the wordplay.
'maybe clock' becomes 'timer' (a clock times things).
'frames' indicates putting letters inside.
'black' becomes 'b' (as in pencil classifications).
'timer' enclosing 'b' is 'TIMBER'.
'and' acts as a link.
(Other definitions for timber that I've seen before include "22 [BEAM]" , "Wood prepared for use in carpentry or building" , "Watch out for falling tree!" , "board" , "wooden" .)