1) to prostitute one's body to the lust of another
2) to give one's self to unlawful sexual intercourse
2a) to commit fornication
3) metaphorically to be given to idolatry, to worship idols
3a) to permit one's self to be drawn away by another into idolatry
Part of Speech: verb
Citing in TDNT: 6:579, 918
From G4204; to act the harlot, that is, (literally) indulge unlawful lust (of either sex), or (figuratively) practise idolatry: - commit (fornication).
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 πορνεύω; click on the second column to search for that grammatical form of the root πορνεύω; click on the third column to search for that word and grammatical form; click on the total to search for the root πορνεύω.