Definition of "fishmouth" in Anglais

noun

1. (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.

2. (surgery) A wide incision made to drain fluid from under the fingernail.

3. (surgery) A horizontal incision on the breast aligned with the nipples made to drain or excise the breast fat as a form of top surgery.

4. (colloquial) A chronically open mouth.