- Scorpio (n.)
- zodiacal constellation, late 14c., from Latin scorpio (poetic scorpius) "scorpion," also the zodiac constellation (see scorpion). The meaning "person born under or ruled by the sign of Scorpio" is recorded from 1968.
- scorpion (n.)
- c. 1200, from Old French scorpion (12c.), from Latin scorpionem (nominative scorpio), extended form of scorpius, from Greek skorpios "a scorpion," from PIE root *(s)ker- (1) "to cut" (see shear (v.)). The Spanish alacran "scorpion" is from Arabic al-'aqrab.