birdsmouth (English, noun)
expansion: birdsmouth (plural birdsmouths)
Senses:
topics: business
carpentry
construction
manufacturing
glosses: 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.
Forms:
form: birdsmouths
tags: plural
form: bird's mouth
tags: alternative
form: birdmouth
tags: alternative