1. Memorable for being a special occasion
   "on red-letter nights a large gathering greeted the celebrity"

See also: unforgettable

• poplar
• Poplar Bluff
• poplar tree
• poplin
• popliteal
• popliteal artery
• popliteal vein
• popover
• poppa
• poppadom
• poppadum
• popper
• poppet
• poppet valve
• poppied
• popping
• popple
• poppy
• Poppy Day
• poppy family
• poppy mallow
• poppy seed
• poppycock
• popsicle
• populace