1) to look down, see from above, view from on high
2) to see thoroughly, perceive clearly, understand
Part of Speech: verb
Citing in TDNT: 5:379, 706
From G2596 and G3708; to behold fully, that is, (figuratively) distinctly apprehend: - clearly see.
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 καθοράω; click on the second column to search for that grammatical form of the root καθοράω; click on the third column to search for that word and grammatical form; click on the total to search for the root καθοράω.