TEACHE
Teache, n. Etym: [Cf. Ir. teaghaim, Gael. teasaich, to heat.] (Sugar
Works)

Defn: One of the series of boilers in which the cane juice is treated in making sugar; especially, the last boiler of the series. Ure.

TEACHER
Teach"er, n.

1. One who teaches or instructs; one whose business or occupation is to instruct others; an instructor; a tutor.

2. One who instructs others in religion; a preacher; a minister of the gospel; sometimes, one who preaches without regular ordination. The teachers in all the churches assembled. Sir W. Raleigh.

TEACHING
Teach"ing, n.

Defn: The act or business of instructing; also, that which is taught; instruction.

Syn.
— Education; instruction; breeding. See Education.

TEACHLESS
Teach"less, a.

Defn: Not teachable. [R.] Shelley.