Noun
(historical) A wheel-like amulet of the ancient Gauls, intended to symbolize the sun.
(cooking) steak (especially of veal, cut across the leg)
Source: en.wiktionary.orgIn 1773, Hilaire Rouelle obtained crystals containing urea from human urine by evaporating it and treating it with alcohol in successive filtrations. Source: Internet
Guillaume-Francois Rouelle brought the theory of phlogiston to France, and he was a very influential scientist and teacher so it gained quite a strong foothold very quickly. Source: Internet
Rouelle describes the procedure he used to separate urea from urine on pages 454–455. Source: Internet