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Pronunciation varies by accent · noun
(roofing) A half-cylindrical or half-conical shaped opening or void in a lapped edge or seam, usually caused by wrinkling or shifting of ply sheets during installation..
Use fish mouth when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Fish mouth means (roofing) A half-cylindrical or half-conical shaped opening or void in a lapped edge or seam, usually caused by wrinkling or shifting of ply sheets during installation..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use fish mouth where its definition matches the intended context.
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