1) Herb 2) Herbaceous plant 3) Meryl streep movie 4) Plant of the aster family 5) Streep movie 6) Vernonia 7) Viking Press book Found on https://www.crosswordclues.com/clue/ironweed
(from the article `Kennedy, William`) ...in Albany in 1931. Billy Phelan`s Greatest Game (1978), also set in Albany, chronicles the life of a small-time streetwise hustler who sidesteps ... Found on http://www.britannica.com/eb/a-z/i/40
any of about 500 species of perennial plants constituting the genus Vernonia of the family Asteraceae. Small herbaceous species are distributed ... Found on http://www.britannica.com/eb/a-z/i/40
I'ron·weed` noun (Botany) A tall weed with purplish flowers ( Vernonia Noveboracensis ). The name is also applied to other plants of the same genus. Found on http://www.encyclo.co.uk/webster/I/96
[n] - any of various plants of the genus Vernonia of tropical and warm regions of especially North America that take their name from their loose heads of purple to rose flowers that quickly take on a rusty hue Found on http://www.webdictionary.co.uk/definition.php?query=ironweed