cornerboard

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noun

A length of trim or molding used in construction to cover the external corners of a building.

Scrabble 16
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Meanings

nouncornerboard (plural cornerboards)

plural cornerboards

  1. architectureA length of trim or molding used in construction to cover the external corners of a building.

    A ⁵⁄₄-inch cornerboard furred out ¼ inch gives a matching shadowline to a 1½-inch original cornerboard

    2010, Aaron Lubeck, Green Restorations: Sustainable Building and Historic Homes

Origin

From corner + board.

Full word history & related roots →
Cite this entry
APA

cornerboard. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/cornerboard

MLA

“cornerboard.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/cornerboard. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “cornerboard,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/cornerboard.

Source: cornerboard on Wiktionary, CC BY-SA 4.0.