HACKMATACKS
Scrabble letter values: H4A1C3K5M3A1T1A1C3K5S1 = 28
Definition
HACKMATACKS is the plural of HACKMATACK.
noun HACKMATACK: poplar of northeastern North America with broad heart-shaped leaves.
Synonyms of HACKMATACK: balsam_poplar, tacamahac, Populus_balsamifera