daymark

[dey-mahrk]

noun

a navigational aid distinctively marked for visibility by day.

Origin of daymark

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for daymark

Historical Examples of daymark

Such an object, whether artificial or natural, was called by the Icelanders, dagsmark (daymark).
The Pre-Columbian Discovery of America by the Northmen
B. F. De Costa