What is Administer?

Legal Definition
Trusts. To do some act in relation to an estate, such as none but the owner, or some one authorized by him or by the law, in caseof his decease, could legally do. 1 Harr. Cond. Lo. R. 666.
-- Bouviers Law Dictionary
Legal Definition
To discharge the duties of an office; to take charge of business; to manage affairs; to serve in the conduct of affairs, in the application of things to their uses; to settle and distribute the estate of a decedent. In physiology, and in criminal law, to administer means to cause or procure a person to take some drug or other substance into his or her system; to direct and cause a medicine, poison, or drug to be taken into the system. State v. Jones, 4 Pennewill (Del.) 109, 53 Atl. 861; McCaughey v. State, 156 Ind. 41, 59 N. E. 169; La Beau v. People, 34 N. Y. 223; Sumpter v. State, 11 Fla. 247; Robbins v. State, 8 Ohio St. 131.

Neither fraud nor deception is a necessary ingredient in the act of administering poison. To force poison into the stomach of another; to compel another by threats of violence to swallow poison; to furnish poison to another for the purpose and with the intention that the person to whom it is delivered shall commit suicide therewith, and which poison is accordingly taken by the suicide for that purpose; or to be present at the taking of poison by a suicide, participating m the taking thereof, by assistance, persuasion, or otherwise,—each and all of these are forms and modes of "administering" poison. Blackburn v. State, 23 Ohio St. 146,
-- Black's Law Dictionary