1) to fold together, roll up
Part of Speech: verb
Probably akin to πετάννυμι petannumi (to spread; and thus apparently allied to G4072 through the idea of expansion, and to G4429 through that of flattening; compare G3961); to fold, that is, furl a scroll: - close.
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 πτύσσω; click on the second column to search for that grammatical form of the root πτύσσω; click on the third column to search for that word and grammatical form; click on the total to search for the root πτύσσω.