The word fluegelhorns 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: 23
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (40 words)
engulfs, enrolls, fellers, flenser, flugels, flusher, foreleg, forseen, freshen, fuelers, fueller, fullers, furlong, gleeful, golfers, herself, hollers, hullers, hungers, leghorn, lounger, lounges, negroes, oneself, ourself, reflogs, reflush, refuels, refuges, reglues, regulon, rehones, rehouse, roughen, sheller, sulfone, surgeon, unhorse, unreels, unrolls