Roots/*h₂eyg-h₂eyg-“goat, shame”DebatedanimalnaturegoatRoot for goat, yielding Greek aix/aigos (goat), English aegis.Related Roots(s)teh₂n-“to thunder”Hreg-“to wet, to rain”angʷʰi-“eel, snake, water-serpent”bʰerǵ-s-“to protect by enclosing”bʰew-sis-“nature, growth, being”bʰew-tú-“growth, nature, coming-to-be”bʰleh₁-“to blow, to puff”bʰleh₁-k-“to cry out, to bleat”