1) to serve for hire
2) to serve, minister to, either to the gods or men and used alike of slaves and freemen
2a) in the NT, to render religious service or homage, to worship
2b) to perform sacred services, to offer gifts, to worship God in the observance of the rites instituted for his worship
2b1) of priests, to officiate, to discharge the sacred office
Part of Speech: verb
Citing in TDNT: 4:58, 503
From λάτρις latris (a hired menial); to minister (to God), that is, render religious homage: - serve, do the service, worship (-per).
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 λατρεύω; click on the second column to search for that grammatical form of the root λατρεύω; click on the third column to search for that word and grammatical form; click on the total to search for the root λατρεύω.