Odd, peculiar, non-uniform, copy (7)
I believe the answer is:
replica
'copy' is the definition.
(replica is a kind of copy)
'odd peculiar non-uniform' is the wordplay.
'odd' indicates an anagram.
'non' suggests deleting specific letters.
'uniform' becomes 'U' (phonetic alphabet: alpha, bravo, charlie etc.).
'peculiar' with 'u' removed is 'pecliar'.
'pecliar' anagrammed gives 'REPLICA'.
(Other definitions for replica that I've seen before include "I parcel (anag) - reproduction" , "Parcel I used to contain exact copy" , "Perfect copy" , "Parcel I arranged as exact copy" , "Caliper (anag)" .)