1. A tower with a light that gives warning of shoals to passing ships
   - beacon, lighthouse, pharos

Derived forms: beacon lights

Type of: tower

• obscurity
• obsecrate
• obsequious
• obsequiously
• obsequiousness
• obsequy
• observable
• observably
• observance
• observant
• observantly
• observation
• observation dome
• observation post
• observation station
• observation tower
• observational
• observator
• observatory
• observe
• observed
• observed fire
• observer
• observer's meridian
• observing