Any of various arachnids of the order Scorpiones, related to the spiders, characterised by two large front pincers and a curved tail with a venomous sting in the end.
User Defined Definitions
"the eighth sign of the zodiac; the sun is in this sign from about October 23 to November 21"
"arachnid of warm dry regions having a long segmented tail ending in a venomous stinger"