The word breadcrumbs 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: 25
Highest Scoring Words With Friends™ Play In The Letters breadcrumbs
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Seven Letter Word Alert: (27 words)
abduces, barbers, bedaubs, bracers, cambers, carders, crabbed, crabber, crumbed, crumber, crusade, dabbers, daubers, deburrs, decarbs, decrumb, drabber, drubber, dubbers, eardrum, murders, rescrub, rubbers, rumbaed, scabbed, scarred, subrace