The word machicolating 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: 28
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (40 words)
acclaim, acholia, aclinic, actinic, alginic, alicant, angioma, caching, calming, catalog, chaotic, chiming, chitlin, coaling, coalman, coating, coatman, coiling, colicin, comical, conical, gnocchi, hailing, halting, intagli, itching, lacinia, laconic, lathing, magical, mailing, malting, moating, molting, monilia, oghamic, tailing, thalami, thiamin, toiling