What does "scorpion" mean?

Additional senses

1. 2.(Zoöl.) the scorpene.
2. 3.(Script.) A painful scourge. My father hath chastised you with whips, but I will chastise you with scorpions. 1 Kings xii.
3. 4.5. (Astron.) A sign and constellation. See Scorpio.
4. 5.(Antiq.) An ancient military engine for hurling stones and other missiles. Book scorpion. (Zoöl.) See under Book. -- False scorpion. (Zoöl.) See under False, and Book scorpion. -- Scorpion bug, or Water scorpion (Zoöl.) See Nepa. -- Scorpion fly (Zoöl.), a neuropterous insect of the genus Panorpa. See Panorpid. -- Scorpion grass (Bot.), a plant of the genus Myosotis. M. palustris is the forget-me-not. -- Sorpion senna (Bot.), a yellow-flowered leguminous shrub (Coronilla Emerus) having a slender joined pod, like a scorpion's tail. The leaves are said to yield a dye like indigo, and to be used sometimes to adulterate senna. -- Scorpion shell (Zoöl.), any shell of the genus Pteroceras. See Pteroceras. -- Scorpion spiders. (Zoöl.), any one of the Pedipalpi. -- Scorpion's tail (Bot.), any plant of the leguminous genus Scorpiurus, herbs with a circinately coiled pod; -- also called caterpillar. -- Scorpion's thorn (Bot.), a thorny leguminous plant (Genista Scorpius) of Southern Europe. -- The Scorpion's Heart (Astron.), the star Antares in the constellation Scorpio.