bird's mouth

A form of birdsmouth — A notch cut into the underside of a rafter to ensure that it does not move when resting on the wall plate running across the top of a wall; a similar notch in other timber components.

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Meanings

nounbird's mouth (plural birds' mouths)

plural birds' mouths

  1. alternativeAlternative form of birdsmouth.
Cite this entry
APA

bird's mouth. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/bird's%20mouth

MLA

“bird's mouth.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/bird's%20mouth. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “bird's mouth,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/bird's%20mouth.

Source: bird's mouth on Wiktionary, CC BY-SA 4.0.