Mimic back from Miami University scoffed (7)
I believe the answer is:
imitate
'mimic' is the definition.
(I know this)
'back from miami university scoffed' is the wordplay.
'back from' suggests the final letters (the letter at the back of the word).
'university' becomes 'MIT' (Massachusetts Institute of Technology).
'scoffed' becomes 'ate' ('to scoff' is to eat).
The final letter of 'miami' is 'i'.
'i'+'mit'+'ate'='IMITATE'
(Other definitions for imitate that I've seen before include "Follow suit" , "I tame it (anag)" , "Mock" , "Parrot" , "I tame it to copy it" .)