The word orthoscopes 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: 19
Highest Scoring Words With Friends™ Play In The Letters orthoscopes
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Seven Letter Word Alert: (28 words)
chooser, chooses, cohorts, corpses, corsets, escorts, oophore, ooscope, oospore, pooches, poorest, porches, poroses, posters, pothers, process, reposts, reshoot, respots, scooper, scooter, sectors, shooter, soother, soothes, stooper, strophe, torches