American biscuit (6)
I believe the answer is:
cookie
'american biscuit' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for cookie that I've seen before include "Identifying data; biscuit" , "Piece of computer data" , "An American sweet biscuit" , "Biscuit; computer data" , "Biscuit - information tag placed on browser" .)