bird's mouth

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bird's mouth (plural birds' mouths)

  1. (architecture) An interior angle or notch cut across a piece of timber, for the reception of the edge of another, such as that in a rafter to be laid on a plate.


  • (interior angle or notch in timber): crow's-foot (US)

Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.