"Signal flags" are a set of colorful flags that carry messages or convey information between ships or in military operations. They are used instead of words to communicate important instructions or warnings from a distance. Full definition
The bold graphic design of this pillow reminds us of nautical signal flags. (potterybarn.com)
Signal flags inspired this Organic Cole Quiltâ $ ™ s nautical stripes and preppy palette. (potterybarnkids.com)
The film introduces us to protagonist Umi as she prepares a meal for her eclectic household, before raising signal flags in honour of her father, a ship captain who perished during the Korean War. (filmireland.net)