The nothing we get from America (5)
I believe the answer is:
zilch
'the nothing' is the definition.
(synonyms)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for zilch that I've seen before include "Nil" , "Nothing, zero" , "Zero (sl.)" , "Zip" , "Diddly-squat" .)