1. waterproof material used to prevent water from entering joints in a roof or wall
Usage: construction

1. emitting brief, bright bursts of light

1. present participle of flash; showing or displaying briefly

Examples

• The roofer installed new flashing around the chimney.
• Flashing lights warned drivers of the construction zone ahead.
• The lighthouse sent flashing signals across the dark water.
• She was flashing her new engagement ring to everyone.
• The flashing neon sign advertised the diner’s daily specials.
• Water leaked through damaged flashing on the roof.
• The flashing red light indicated an emergency.