What does "learn" mean?

Additional senses

1. 2.2. To communicate knowledge to; to teach. [Obs.] Hast thou not learned me how To make perfumes Shak. Note: Learn formerly had also the sense of teach, in accordance with the analogy of the French and other languages, and hence we find it with this sense in Shakespeare, Spenser, and other old writers. This usage has now passed away. To learn is to receive instruction, and to teach is to give instruction. He who is taught learns, not he who teaches.
2. 3.To acquire knowledge or skill; to make progress in acquiring knowledge or skill; to receive information or instruction; as, this child learns quickly. Take my yoke upon you and learn of me. Matt. xi.
3. 4.To learn by heart. See By heart, under Heart. -- To learn by rote, to memorize by repetition without exercise of the understanding.