1) that which is thrown or put upon a thing, or that which is added to it
1a) an addition
1b) that which is sewed on to cover a rent, a patch
Part of Speech: noun neuter
From G1911; a patch: - piece.
These two sites give similar information, with the definition from several dictionaries and statistics on the use of the word.
Perseus Digital Library
University of Chicago's Logion lexicon
Thayer's dictionary plus other information.
From this site's dictionary (in Italian)
Click on the first column to search for that word as a form of the root ἐπίβλημα; click on the second column to search for that grammatical form of the root ἐπίβλημα; click on the third column to search for that word and grammatical form; click on the total to search for the root ἐπίβλημα.