1) to lay down, deposit, lay up
2) to lay by or up for one's self, for future use
3) to lay up favour for one's self with any one, to gain favour with (to do something for one which may win favour)
Part of Speech: verb
From G2596 and G5087; to place down, that is, deposit (literally or figuratively): - do, lay, shew.
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 κατατίθημι; click on the second column to search for that grammatical form of the root κατατίθημι; click on the third column to search for that word and grammatical form; click on the total to search for the root κατατίθημι.