The word haemothoraxes is playable in Words With Friends™, no blanks required. Because it is longer than 7 letters, you would have to play off an existing word or do it in several moves.
Words With Friends™ Letter Score: 27
Highest Scoring Words With Friends™ Plays In The Letters haemothoraxes
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Seven Letter Word Alert: (39 words)
aerates, earshot, emoters, exhorts, exosome, extrema, hamaxes, hamster, hearths, heaters, heather, hetaera, heteros, hexamer, hoaxers, maestro, meataxe, meteors, mothers, osteoma, oxheart, reheats, rehomes, remates, remotes, reshoot, retaxes, reteams, roseate, searoom, sheathe, shooter, smother, soother, steamer, tearoom, theorem, thermos, xeromas