DAILY VOCABULARY WITH PICTURES. Mosque.

• mosque [countable]
• a building in which Muslims worship
• having strong beliefs in God: devout, pious
• someone who does not believe in God : atheist
• someone who is not sure if God exists: agnostic
• god
• ➔ See also god
• WORD FOCUS: god 
  places where people worship God: church (Christians)
  temple (Buddhists and Hindus)
  mosque (Muslims)
  synagogue (Jews)
  treated with great respect because of being connected with God: holy, sacred

Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.