1. The act of binding; restriction; also, obligation. Milton. 2. (Med.) (a) A contraction of parts by applications; the action of an astringent substance on the animal economy. Dunglison. (b) Constipation. Arbuthnot. 3. Astringency. [Obs.] Bacon. 4. (Scots Law) An obligation to have the grain growing on certain lands ground at a certain mill, the owner pay...