1) the space between the eyes, the forehead
Part of Speech: noun neuter
Citing in TDNT: 4:635, 591
From G3326 and ὤψ; ôps (the face); the forehead (as opposite the countenance): - forehead.
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 μέτωπον; click on the second column to search for that grammatical form of the root μέτωπον; click on the third column to search for that word and grammatical form; click on the total to search for the root μέτωπον.