chatterbox

(noun) orchid growing along streams or ponds of western North America having leafy stems and 1 greenish-brown and pinkish flower in the axil of each upper leaf. Synonyms: stream orchid, giant helleborine, Epipactis gigantea.

(noun) an obnoxious and foolish and loquacious talker. Synonyms: chatterer, babbler, prater, magpie, spouter.