'Teacher' definitions:

Definition of 'teacher'

From: WordNet
noun
A person whose occupation is teaching [syn: teacher, instructor]
noun
A personified abstraction that teaches; "books were his teachers"; "experience is a demanding teacher"

Definition of 'Teacher'

From: GCIDE
  • Teacher \Teach"er\, n.
  • 1. One who teaches or instructs; one whose business or occupation is to instruct others; an instructor; a tutor. [1913 Webster]
  • 2. One who instructs others in religion; a preacher; a minister of the gospel; sometimes, one who preaches without regular ordination. [1913 Webster]
  • The teachers in all the churches assembled. --Sir W. Raleigh. [1913 Webster]