bʰerǵ-s-

“to protect by enclosing”

Debatedmaterialnature

birch, bark (tree covering)

Derivative from *bʰerǵ- "to protect", yielding Old English beorc "birch" (the tree with protective bark), English birch, bark.

(s)teh₂n-“to thunder”Hreg-“to wet, to rain”angʷʰi-“eel, snake, water-serpent”bʰerdʰ-“to cut, split, separate”bʰew-sis-“nature, growth, being”bʰew-tú-“growth, nature, coming-to-be”bʰleh₁-“to blow, to puff”bʰreg-mn̥“that which breaks, fragment”