1) a gift offered (or to be offered) to God
2) the sacred treasury
Part of Speech: noun masculine
Citing in TDNT: 3:860, 459
Of Hebrew and Chaldee origin respectively [H7133]; a votive offering and the offering; a consecrated present (to the Temple fund); by extension (the latter term) the Treasury itself, that is, the room where the contribution boxes stood: - Corban, treasury.
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 κορβανᾶς; click on the second column to search for that grammatical form of the root κορβανᾶς; click on the third column to search for that word and grammatical form; click on the total to search for the root κορβανᾶς.