The word spirometer 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: 16
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (56 words)
emoters, emperor, empires, emptier, empties, epimers, episome, epitome, erotise, imports, imposer, isomere, meteors, metrise, miterer, moister, mopiest, mortise, permits, poetise, porters, premier, premise, presort, preterm, primers, primost, promise, reemits, remorse, remoter, remotes, reports, reposer, reprime, reprise, respire, respite, restore, retimer, retimes, retires, retries, retrims, rioters, roister, rompers, ropiest, stomper, striper, tempers, tempore, toprims, tremors, trimers, trireme