Butt-joint definition

A joint formed by two abutting surfaces placed squarely together.
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Any joint made by fastening two pieces of wood or metal together end to end or at right angles without overlapping: it is sometimes strengthened with an added part or parts.
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(construction) A joint formed by adjacent, separate section of material, such as where two neighboring pieces of insulation abut.
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Other Word Forms

Noun

Singular:
butt-joint
Plural:
butt-joints

Origin of butt-joint

  • From butt

    From American Heritage Dictionary of the English Language, 5th Edition