The word rhinestones 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: 15
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (63 words)
entries, erotise, estrone, heiress, heroine, heroins, heroise, hessite, heteros, histone, hornets, hosiers, hotness, inserts, inshore, intense, interns, intoner, intones, introns, neither, nesters, nitrene, norites, nosiest, oneness, orients, rehones, renests, rennets, resents, reshine, reshoes, rosiest, seitens, seniors, sestine, shiners, shorten, shrines, sinners, sinters, soirees, sonnets, sorties, stenose, stereos, stoners, stonier, stonish, stories, tenners, tension, tensors, therein, thereon, thinner, thiones, thrones, tinhorn, tinners, trienes, triones