Emily Dickinson Lexicon

COR'OL-LA-RY, n. [L. corollarium, a coronet, from corolla, a crown. Finis coronat opus. Johnson. Fr. corollaire.]

1. A conclusion or consequence drawn from premises, or from what is advanced or demonstrated. If it is demonstrated that a triangle which has equal sides, has also Nut angles, it follows as a corollary that a triangle which has three equal sides, has its three angles equal. Encyc. A corollary is an inference from a preceding proposition. – J. Day.
2. A surplus. – Shak.