1) A sect that seems to have started after the Jewish exile. In addition to OT books the Pharisees recognised in oral tradition a standard of belief and life. They sought for distinction and praise by outward observance of external rites and by outward forms of piety, and such as ceremonial washings, fastings, prayers, and alms giving; and, comparatively negligent of genuine piety, they prided themselves on their fancied good works. They held strenuously to a belief in the existence of good and evil angels, and to the expectation of a Messiah; and they cherished the hope that the dead, after a preliminary experience either of reward or of penalty in Hades, would be recalled to life by him, and be requited each according to his individual deeds. In opposition to the usurped dominion of the Herods and the rule of the Romans, they stoutly upheld the theocracy and their country's cause, and possessed great influence with the common people. According to Josephus they numbered more than 6000. They were bitter enemies of Jesus and his cause; and were in turn severely rebuked by him for their avarice, ambition, hollow reliance on outward works, and affection of piety in order to gain popularity.
Part of Speech: noun masculine
Citing in TDNT: 9:11, 1246
Of Hebrew origin (compare [H6567]); a separatist, that is, exclusively religious; a Pharisaean, that is, Jewish sectary: - Pharisee.
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 Φαρισαῖος; click on the second column to search for that grammatical form of the root Φαρισαῖος; click on the third column to search for that word and grammatical form; click on the total to search for the root Φαρισαῖος.