noun
: a tall yellow-flowered herb ( Silphium perfoliatum ) of the United States whose upper leaves are connate at the base and form a cup around the stem
noun
: a tall yellow-flowered herb ( Silphium perfoliatum ) of the United States whose upper leaves are connate at the base and form a cup around the stem
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012