The word sandgrouses 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: (48 words)
aground, aroused, arouses, assured, assures, asunder, dangers, degauss, desugar, dogears, dosages, dousers, dragons, engross, ganders, gardens, gaseous, gassers, gourdes, grassed, grasses, groaned, grossed, grosses, grounds, groused, grouses, guerdon, oranges, reasons, resands, resound, sadness, sanders, seadogs, seasons, sensors, snudges, sodgers, sounder, sudsers, sugared, sundaes, sundogs, surgeon, undergo, undoers, undress