1) to convict, refute, confute
1a) generally with a suggestion of shame of the person convicted
1b) by conviction to bring to the light, to expose
2) to find fault with, correct
2a) by word
2a1) to reprehend severely, chide, admonish, reprove
2a2) to call to account, show one his fault, demand an explanation
2b) by deed
2b1) to chasten, to punish
Part of Speech: verb
Citing in TDNT: 2:473, 221
Of uncertain affinity; to confute, admonish: - convict, convince, tell a fault, rebuke, reprove.
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 ἐλέγχω; click on the second column to search for that grammatical form of the root ἐλέγχω; click on the third column to search for that word and grammatical form; click on the total to search for the root ἐλέγχω.