Emily Dickinson Lexicon

TEACH-ER, n.

1. One who teaches or instructs.
2. An instructor; a preceptor; a tutor; one whose business or occupation is to instruct others.
3. One who instructs others in religion; a preacher; a minister of the Gospel. The teachers in all the churches assembled themselves. Ralegh.
4. One who preaches without regular ordination. Swift.