1) to go down, come down, descend
1a) the place from which one has come down from
1b) to come down
1b1) as from the temple at Jerusalem, from the city of Jerusalem
1b2) of celestial beings coming down to earth
1c) to be cast down
2) of things
2a) to come (i.e. be sent) down
2b) to come (i.e. fall) down
2b1) from the upper regions of the air
3) metaphorically to (go, i.e.) be cast down to the lowest state of wretchedness and shame
Part of Speech: verb
Citing in TDNT: 1:522, 90
From G2596 and the base of G939; to descend (literally or figuratively): - come (get, go, step) down, descend, fall (down).
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 καταβαίνω; click on the second column to search for that grammatical form of the root καταβαίνω; click on the third column to search for that word and grammatical form; click on the total to search for the root καταβαίνω.