a conspicuous object on land, visible from the sea, serving to guide or warn mariners, as a beacon.
Origin of seamark
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for seamark
Historical Examples of seamark
Let me see; O I am scarce able to look about me: where is there any seamark that I am acquainted withal?The Works of John Marston
nautical an aid to navigation, such as a conspicuous object on a shore used as a guide
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012