to come to an agreement; to determine the terms of an agreement
You throw in that and it will seal the deal.
seal the deal
noun 1. a plant, Mertensia maritima, of the borage family, growing on northern seacoasts and having leaves with an oysterlike flavor.
[see-lee-ham, -lee-uh m] /ˈsi liˌhæm, -li əm/ noun 1. one of a Welsh breed of small terriers having short legs, a docked tail, and a wiry, mostly white coat. Sealyham terrier /ˈsiːlɪəm/ noun 1. a short-legged wire-haired breed of terrier with a medium-length white coat Often shortened to Sealyham
noun 1. a stout grass, Elymus arenarius, of Eurasia, used as a binder for shifting sand.
noun 1. a mermaid. 2. a goddess or nymph of the sea.