Corrupt employer ignoring eastern compound (7)
I believe the answer is:
polymer
'compound' is the definition.
(polymer is a kind of compound)
'corrupt employer ignoring eastern' is the wordplay.
'corrupt' is an anagram indicator.
'ignoring' suggests deleting specific letters.
'eastern' becomes 'e'.
'employer' with 'e' taken out is 'mployer'.
'mployer' anagrammed gives 'POLYMER'.
(Other definitions for polymer that I've seen before include "Mo, reply to the large molecule" , "Repeated-molecule compound" , "Substance with large molecules of smaller units" , "Compound with large molecules in simple repeated units" , "Resin base" .)