The word aitchbones 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: 19
Highest Scoring Words With Friends™ Play In The Letters aitchbones
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Seven Letter Word Alert: (30 words)
absinth, achiest, aconite, actions, aitches, atonics, bastion, batches, beacons, benthic, benthos, biotech, boniest, botanic, botches, cabinet, cations, chasten, cohabit, ebonics, ethnics, histone, iceboat, niobate, notches, notices, obtains, octanes, section, thiones