n. [ L.: cf. F. interrogateur. ] One who asks questions; a questioner. [ 1913 Webster ]
n.; pl. Interrogatories [ Cf. F. interrogatoire. ] A formal question or inquiry; esp. (Law), a question or series of questions asked in writing, usually as part of a lawsuit. Macaulay. [ 1913 Webster ]
a. [ L. interrogatorius. ] Containing, expressing, or implying a question; as, an interrogatory sentence. [ 1913 Webster ]