Second dance in store (4)
I believe the answer is:
shop
'store' is the definition.
('shop' can be a synonym of 'store')
'second dance' is the wordplay.
'second' becomes 's' (common abbreviation).
'dance' becomes 'hop' (hop is a kind of dance**).
's'+'hop'='SHOP'
'in' is the link.
(Other definitions for shop that I've seen before include "Where goods are bought and sold" , "Store - grass up" , "Store or boutique" , "Store - workplace" , "Place to buy" .)