Sort of show to knock one out (5)
I believe the answer is:
floor
This clue might be a double definition.
'sort of show' is the first definition.
'knock one out' is the second definition.
'floor' can be an answer for 'knock' (thesaurus). I'm not certain of the 'one out' bit.
'to' is the link.
Can you help me to learn more?
(Other definitions for floor that I've seen before include "at bottom of forest" , "Fox" , "Storey of a building" , "Minimum (price) level" , "Bottom surface" .)