Put your foot in the waste paper basket (4)
I believe the answer is:
step
'put your foot' is the definition.
I can't tell whether this definition defines the answer.
'in the waste paper basket' is the wordplay.
'in' indicates a hidden word.
'STEP' can be found hidden inside 'waste paper basket'.
Can you help me to learn more?
(Other definitions for step that I've seen before include "Gradation" , "Set foot down on pest" , "Football" , "Bit of mashed potato maybe" , "Pace; foothold" .)