tutorn.[OE. tutour, L. tutor, fr. tueri to watch, defend: cf. F. tuteur. Cf. Tuition.] One who guards, protects, watches over, or has the care of, some person or thing.() A treasurer; a keeper.(Piers Plowman.) (Civ. Law) One who has the charge of a child or pupil and his estate; a guardian.() A private or public teacher.() (Eng. Universities) An officer or member of some hall, who instructs students, and is responsible for their discipline.() (Am. Colleges) An instructor of a lower rank than a professor.()v. t.1. To have the guardianship or care of; to teach; to instruct.()Their sons are well tutored by you. (Shak.)2. To play the tutor toward; to treat with authority or severity.(Addison.)