1. teach - Noun
2. teach - Verb
3. Teach - Proper noun
To impart the knowledge of; to give intelligence concerning; to impart, as knowledge before unknown, or rules for practice; to inculcate as true or important; to exhibit impressively; as, to teach arithmetic, dancing, music, or the like; to teach morals.
To direct, as an instructor; to manage, as a preceptor; to guide the studies of; to instruct; to inform; to conduct through a course of studies; as, to teach a child or a class.
To accustom; to guide; to show; to admonish.
To give instruction; to follow the business, or to perform the duties, of a preceptor.
Source: Webster's dictionaryWhoever can weep over himself for one hour is greater than the one who is able to teach the whole world; whoever recognizes the depth of his own frailty is greater than the one who sees visions of angels. Isaac the Syrian
Much learning does not teach understanding. Heraclitus
Give a man a fish and you feed him for a day. Teach a man to fish and you feed him for a lifetime. English Proverb
You can't teach an old dog new tricks. English Proverb