root beer UK /ˈɹuːt ˌbɪə/US /ˈɹut ˌbɪɹ/ noun2 •A beverage, most often a carbonated soft drink made from a combination of vanilla, cherry tree bark, licorice root, sarsaparilla root, sassafras root bark, nutmeg, anise, and molasses, among other things. •A dark reddish-brown color, similar to the drink.[…]most of our bucks have antlers that are varying degrees of brown, from a deep rich root beer shade to walnut to even light amber. — 2006 formsroot beers