arch board

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noun Nautical.

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. 2019

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