pn (given name|male|from=Latin), borne by numerous saints and 13 popes.
pn (zodiac constellations): A constellation of the zodiac, shaped approximately like a lion and containing the bright star Regulus.
pn (astrology): The zodiac sign for the Lion, ruled by the Sun and covering July 23 - August 22 (tropical astrology) or August 16 - September 15 (sidereal astrology).