- a distinctive area at the upper part of a stern, curving upward toward the center and giving the name and port of the vessel within a carved and painted frame; escutcheon.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for arch board
The arch-board, or part whereon the ship's name and port are painted.The Sailor's Word-Book
William Henry Smyth