look out

• n.
  • a person employed to watch for something to happen

    同义词： lookout lookout man sentinel sentry watch spotter scout picket

  • an elevated post affording a wide view

    同义词： lookout observation post

  • a structure commanding a wide view of its surroundings

    同义词： lookout observation tower lookout station observatory

  • the act of looking out

    同义词： lookout outlook

• v.
  • be vigilant, be on the lookout, be on one's guard, be careful

    同义词： watch watch out

  • to protect someone's interests

以上来源于: WordNet