- to impart knowledge of or skill in; give instruction in: She teaches mathematics.
- to impart knowledge or skill to; give instruction to: He teaches a large class.
- to impart knowledge or skill; give instruction.
- Informal. teacher.
Origin of teach
- Edward, known as Blackbeard. died 1718, English pirate, active in the West Indies and on the Atlantic coast of North America
- (tr; may take a clause as object or an infinitive often foll by how) to help to learn; tell or show (how)to teach someone to paint; to teach someone how to paint
- to give instruction or lessons in (a subject) to (a person or animal)to teach French; to teach children; she teaches
- (tr; may take a clause as object or an infinitive) to cause to learn or understandexperience taught him that he could not be a journalist
- Also: teach someone a lesson informal to cause (someone) to suffer the unpleasant consequences of some action or behaviour
Word Origin and History for re-teach
Old English tæcan (past tense and past participle tæhte) "to show, point out," also "to give instruction," from Proto-Germanic *taikijanan (cf. Old High German zihan, German zeihen "to accuse," Gothic ga-teihan "to announce"), from PIE *deik- "to show, point out" (see diction). Related to Old English tacen, tacn "sign, mark" (see token). Related: Taught; teaching.
Old English tæcan had more usually a sense of "show, declare, warn, persuade" (cf. German zeigen "to show," from the same root); while the Old English word for "to teach, instruct, guide" was more commonly læran, source of modern learn and lore.