The word bronchioles 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: 21
Highest Scoring Words With Friends™ Plays In The Letters bronchioles
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Seven Letter Word Alert: (36 words)
bicolor, binocle, birches, boilers, boleros, boorish, bosonic, brioche, bronchi, broncos, chlorin, choline, chooser, chorion, cloners, coheirs, coiners, console, coolers, creosol, cronies, ebonics, erosion, heroics, heroins, inchers, inshore, lichens, loonier, loonies, oleosin, onshore, orioles, reboils, recoils, recoins