backerboard.
A board used behind or under other material, often as support.
Meaning & usage
A board used behind or under other material, often as support. Boards used as underlayment for tile, plaster, or other materials.
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.)
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.
Where this word comes from
From backer + board.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.