Scrape off second slice of daily bread, dropping middle onto floor (6)
I believe the answer is:
abrade
'scrape off' is the definition.
(I've seen this in another clue)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for abrade that I've seen before include "A beard (anag.)" , "Day breaks? > Start as before" , "Wear away by rubbing (6)" , "Shave" , "Wear away by erosion" .)