Word.ws English Dictionary

cornerboard

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

Noun

cornerboard (plural cornerboards)

  1. A 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 cornerboard2010, Aaron Lubeck, Green Restorations: Sustainable Building and Historic Homes

Forms of cornerboard

pluralcornerboards

Origin of cornerboard

From corner + board.

Questions about cornerboard

What does cornerboard mean?
Cornerboard means a length of trim or molding used in construction to cover the external corners of a building.
What part of speech is cornerboard?
Cornerboard is a noun.
What is the plural of cornerboard?
The plural of cornerboard is cornerboards.

Words near cornerboard in the dictionary

  1. cornerable
  2. cornerback
  3. cornerbacking
  4. cornerbacks
  5. cornerball
  6. cornerboard
  7. cornerboards
  8. cornerboy
  9. cornerboys
  10. cornercap
  11. cornercaps

Source and license

Adapted from Wiktionary: cornerboard (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “cornerboard.” Word.ws, https://word.ws/cornerboard. Based on Wiktionary, CC BY-SA 4.0.