Longman Dictionary English From Longman Dictionary of Contemporary Englishconeflowercone‧flow‧er /ˈkəʊnˌflaʊə $ ˈkoʊnˌflaʊər/ noun [countable, uncountable] a wild purple or white flower commonly found in the US. It is often used as a herb or as a medicine. SYN echinacea ldoceonline.com