fishmouth

Meaning

Noun

• 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.
• A wide incision made to drain fluid from under the fingernail.
• A horizontal incision on the breast aligned with the nipples made to drain or excise the breast fat as a form of top surgery.
• A chronically open mouth.

Origin

• fish + mouth