part of speech: adjective

definition: most important; chief; primary.

  • She gave us a list of the main chapters to study for the final exam.
  • The main entrance to the building is on the other side.

synonyms: biggest, cardinal, chief, paramount, premier, primary, prime, principal, supreme

antonyms: minor
part of speech: noun

definition: a large pipe for distributing water or gas to homes or other buildings.

  • A leak in the water main caused the village to be without water for days.