A limbless cold-blooded vertebrate animal with gills and fins and living wholly in water. A flat plate of metal, wood, or another material that is fixed on a beam or across a joint in order to give additional strength, especially on a ship's damaged mast or spar as a temporary repair. Catch or try to catch fish, typically by using a net or hook and line. Mend or strengthen (a beam, joint, mast, etc.) with a fish.