Definition of teach
1a
: to cause to know something
taught them a trade
b
: to cause to know how
is teaching me to drive
c
: to accustom to some action or attitude
teach students to think for themselves
d
: to cause to know the disagreeable consequences of some action
I'll teach you to come home late
2
: to guide the studies of
3
: to impart the knowledge of
teach algebra
4a
: to instruct by precept, example, or experience
b
: to make known and accepted
experience teaches us our limitations
5
: to conduct instruction regularly in
teach school
: to provide instruction : act as a teacher
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Merriam-Webster unabridged
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Time Traveler for teach
The first known use of teach was before the 12th century
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