Backerboard

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A board used behind or under other material, often as support.; Boards used as underlayment for tile, plaster, or other materials. countable, uncountable

    "A tile setter mounts colorful American-Olean ceramic tile on a new gypsum backerboard in a motel bathroom..."

  2. 2
    A board used behind or under other material, often as support.; A sacrificial board placed behind or under a board being drilled or sawn, so as to prevent blowouts. (Usually scrap ends reused for such purpose.) countable, uncountable
  3. 3
    A board used behind or under other material, often as support.; Sheets of cardboard or similar material used to preserve or display books, magazines, art prints, etc. countable, uncountable

    "Campos likes this shop not only because it's just a few blocks from his Glendale home but because of the little extras that Brown throws in, like wrapping each comic book with a backer board in a plastic protective sleeve."

Example

More examples

"A tile setter mounts colorful American-Olean ceramic tile on a new gypsum backerboard in a motel bathroom..."

Etymology

From backer + board.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.