h₃eyH-s-

“to go quickly, rush”

Debatedmovementspeedbiology

Source of Greek oistros, English estrus, oestrogen

Extended root for rushing, yielding Greek oistros (gadfly/frenzy) and English estrus, oestrogen.‌‍‍‌‌‍‍‍‌‍‌‌‌‍‌‌‍‍‌‌‍‍‌‌‍‍‍‍‍‍‌‍

bʰardʰeh₂“beard, facial hair”bʰeh₂-d-“to go, step, walk”bʰeh₂-g-₂“to eat, consume (LIV)”bʰer-eyo-“to carry repeatedly, bear habitually”bʰer-tó-“carried, borne”dent-“tooth, fang, biting edge”dʰrebʰ-“to drive, push, run”dʰrebʰ-eyo-“to keep running, drive”