Source : Webster's Revised Unabridged Dictionary (1913)

Mosque \Mosque\, n. [F. mosqu['e]e, Sp. mezquita, Ar. masjid,
   from sajada to bend, adore.]
   A Mohammedan church or place of religious worship. [Written
   also {mosk}.]

Source : WordNet®

mosque
     n : (Islam) a Muslim place of worship [syn: {masjid}, {musjid}]