Piquancy in short dance (4)
I believe the answer is:
tang
'piquancy' is the definition.
(I know that piquancy can be written as tang)
'short dance' is the wordplay.
'short' means to remove the last letter.
'dance' becomes 'tango' (Tango is a dance).
'tango' with its last letter removed is 'TANG'.
'in' acts as a link.
(Other definitions for tang that I've seen before include "Strong taste; Chinese dynasty" , "Coarse seaweed" , "Sharp flavour" , "Aroma" , "Strong taste or smell" .)