Definition from Wiktionary, the free dictionary
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Alternative forms 
From Latin scorpiō (“scorpion”).
Proper noun 
- (astronomy): Scorpius
- (astrology): The zodiac sign for the scorpion, ruled by Mars and covering October 24 - November 22 (tropical astrology) or November 16 - December 15 (sidereal astrology).
constellation — see Scorpius
Scorpio (plural Scorpios)
- Someone with a Scorpio star sign