Ladies’ fingers work bread regularly (4)
I believe the answer is:
okra
'ladies' fingers' is the definition.
(ladies' fingers is a name for the okra plant)
'work bread regularly' is the wordplay.
'regularly' indicates alternate letters (regularly take one letter, leave next etc.).
'work'+'bread'='workbread'
The alternating letters of 'workbread' are 'OKRA'.
(Other definitions for okra that I've seen before include "Lady's fingers; gumbo; bhindi" , "vegetable dish" , "vegetable soup ingredient" , "Ladies' fingers with edible pods" , "Tropical plant with edible pods" .)