The word glockenspiels 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: 28
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (96 words)
celling, cession, closing, cognise, college, collies, collins, copings, copsing, cosigns, cosines, eclipse, eelskin, egoless, ellipse, elogies, eloigns, eloping, enclose, enlocks, epilogs, epsilon, genesis, genlock, geocell, glioses, gospels, iceless, illness, inkless, inlocks, insoles, keeling, keeping, kelpies, kelping, kineses, kinless, legions, legless, lesions, license, lingoes, lioness, lipless, locking, lockpin, losings, nickels, nickles, ossicle, pecking, peeking, peeling, pegless, peglike, pencils, penises, penlike, peonies, pickles, pieless, pigeons, pingles, pingoes, pinless, pleions, poesies, polices, pollens, polling, scoping, seeking, seeping, selling, sickens, sickles, signees, silence, silkens, sillock, singles, slocken, sloping, socking, sonlike, species, speckle, spiegel, spinels, spinose, spleens, splenic, splices, splines, sponges