Short book on a dance (5)
I believe the answer is:
rumba
'dance' is the definition.
(rumba is a kind of dance)
'short book on a' is the wordplay.
'short' becomes 'rum' (short can mean an alcoholic drink**).
'book' becomes 'b'.
'on' means one lot of letters go next to another.
'rum'+'b'+'a'='RUMBA'
(Other definitions for rumba that I've seen before include "Dance originating in Cuba" , "Rhythmic dance of Cuban origin" , "Style of dance" , "Latin American dance" , "Strictly round" .)