Component of toolbox routine took effect (5,3)
I believe the answer is:
drill bit
'component of toolbox' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'routine took effect' is the wordplay.
'routine' becomes 'drill' (you know the drill).
'took effect' becomes 'bit' (bite can mean to have an effect).
'drill'+'bit'='DRILL BIT'
Can you help me to learn more?
(Other definitions for drill bit that I've seen before include "it can be boring" , "that bores" , "tool" , "Borer" .)