1) thin, small
2) a small brass coin, equivalent to the eighth part of an "as", worth about a 1/5 of a cent
Part of Speech: adjective
Citing in TDNT: 4:233,*
Neuter of a derivative of the same as G3013; something scaled (light), that is, a small coin: - mite.
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 λεπτόν; click on the second column to search for that grammatical form of the root λεπτόν; click on the third column to search for that word and grammatical form; click on the total to search for the root λεπτόν.