extra, duplicate -- (something additional of the same kind; "he always carried extras in case of an emergency")
duplicate, duplication -- (a copy that corresponds to an original exactly; "he made a duplicate for the files")
Overview of verb duplicate
The verb duplicate has 4 senses
duplicate, reduplicate, double, repeat, replicate -- (make or do or perform again; "He could never replicate his brilliant performance of the magic trick")
twin, duplicate, parallel -- (duplicate or match; "The polished surface twinned his face and chest in reverse")
duplicate -- (make a duplicate or duplicates of; "Could you please duplicate this letter for me?")
double, duplicate -- (increase twofold; "The population doubled within 50 years")
Overview of adj duplicate
The adj duplicate has 2 senses
duplicate -- (identically copied from an original; "a duplicate key")
(Sound)
