No, I don't mean smoke-out as in smoking, you silly people. :p
Main Entry: learn
Part of Speech: verb 2
Synonyms: ascertain, catch on, detect, determine, dig up*, discern, find out, gain, gather, hear, see, smoke out*, stumble upon*, trip over, tumble, uncover, understand, unearth
Notes: learn means to acquire or gain skill, knowledge or comprehension; teach means to impart skill, knowledge or comprehension to.
Source: Roget's New Millennium™ Thesaurus, First Edition (v 1.3.1)
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* = informal or slang