1) to smite with a rod or staff
2) to smite in the face with the palm of the hand, to box the ear
Part of Speech: verb
From a derivative of ῥέπω rhepô, a primary word, (to let fall, "rap"); to slap (with the palm of the hand): - smite (with the palm of the hand). Compare G5180.
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 ῥαπίζω; click on the second column to search for that grammatical form of the root ῥαπίζω; click on the third column to search for that word and grammatical form; click on the total to search for the root ῥαπίζω.