1) to wash: with reference to clothing
1a) use figuratively of those who by faith so appropriate the results of Christ's expiation as to be regarded by God as pure and sinless
Part of Speech: verb
A prolonged form of an obsolete πλύω pluô ploo'-o (to "flow"); to "plunge", that is, launder clothing: - wash. Compare G3068, G3538.
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 πλύνω; click on the second column to search for that grammatical form of the root πλύνω; click on the third column to search for that word and grammatical form; click on the total to search for the root πλύνω.