Definition of

Teacher

  1. (noun, cognition) a personified abstraction that teaches
    experience is a demanding teacher
  2. (noun, person) a person whose occupation is teaching

via WordNet, Princeton University

Synonyms of Teacher

instructor

Origin of the word Teacher

  1. "one who teaches," c.1300; see teach. It was used earlier in a sense of "index finger" (late 13c.). more

via Online Etymology Dictionary, ©2001 Douglas Harper

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