The word alpenstock 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: 22
Highest Scoring Words With Friends™ Play In The Letters alpenstock
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Seven Letter Word Alert: (26 words)
alecost, anklets, apostle, cantles, caplets, enclasp, enlocks, lactone, lactose, lancets, leantos, leptons, locates, lockets, lockset, nepotal, octanes, packets, planets, pockets, polecat, slacken, slocken, spackle, tackles, toecaps