The word saltcellars 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: 17
Highest Scoring Words With Friends™ Play In The Letters saltcellars
:
Seven Letter Word Alert: (30 words)
acaters, actress, allstar, artless, atlases, callers, carless, cartels, casters, castles, cellars, clarets, lactase, lacteal, lateral, rascals, recalls, recasts, reclass, sacrals, scalars, scalers, scarlet, scleral, scleras, searats, seastar, slaters, stellar, tarsals