1. A rectangular piece of fabric used as a signalling device
   - flag

Derived forms: signal flags

Type of: visual signal

Encyclopedia: Signal flag

• Urginea
• Urginea maritima
• urging
• Uria
• Uria aalge
• Uria lomvia
• Uriah
• urial
• uric
• uric acid
• uricaciduria
• uricosuric
• uridine
• Urim and Thummim
• urinal
• urinalysis
• urinary
• urinary apparatus
• urinary bladder
• urinary calculus
• urinary hesitancy
• urinary incontinence
• urinary organ
• urinary retention
• urinary system