learn by heart

learn (something) by heart

To learn something very thoroughly; to memorize something. Ask Becky to recite the poem—she learned it by heart. You don't have to learn these principles by heart, we just want you to have a basic understanding of them.
See also: by, heart, learn
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

learn something by heart

Fig. to learn something so well that it can be written or recited without thinking; to memorize something. The director told me to learn my speech by heart. I had to go over it many times before I learned it by heart.
See also: by, heart, learn
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.

learn by heart

Also, learn by rote. See under by heart.
See also: by, heart, learn
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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References in classic literature ?
At first, being little accustomed to learn by heart, the lessons appeared to me both long and difficult; the frequent change from task to task, too, bewildered me; and I was glad when, about three o'clock in the afternoon, Miss Smith put into my hands a border of muslin two yards long, together with needle, thimble, &c., and sent me to sit in a quiet corner of the schoolroom, with directions to hem the same.
But the Doctor, after hearing their story, doesn't make much of it, and only gives them thirty lines of Homer to learn by heart, and a lecture on the likelihood of such exploits ending in broken bones.
All this will show you how much Mowgli had to learn by heart, and he grew very tired of saying the same thing over a hundred times.
Ms Khoosat elaborated on the efforts the Olomopolo team had put forward into making it easy for the children to learn by heart the Punjabi rhymes of the play.
"We have had 11 pieces to learn by heart in eight part harmonies, including the much-loved 'Sleep', which will end the concert.
Kennedy presented the school a copy of her book, 'Poems to Learn by Heart.' A graduate of Harvard and Columbia Law School, she has edited books on constitutional law, American history, politics and poetry.
De Sousa brought the Iffraaj colt through to score by a comfortable three and a half lengths from Learn By Heart (4-1).
The Queen's LEARN BY HEART can initiate a royal TV double in the Listed Denford Stakes (1.50).
William Haggas can move a step closer to his knighthood when the Queen's LEARN BY HEART (1.50) takes the Denford.
Learn By Heart 2.30 Doncaster SP forecast 11-10 Got the hang of things only late on when third on his debut at Haydock and looks sure to appreciate this step up to 7f.
The book uses rhyming couplets to tell the story and many of the lines will quickly get stuck in your head, and this could easily be something for children to learn by heart. The story evokes the sights and smells of school--'plasticine, custard and newly washed hair'--as the reader follows Nell's quest to find the missing books.
Sulaiman Al-Askari, head of the center, said the aim of modern education is to help people be able to think freely and innovate not to learn by heart. Due to cultural illiteracy, there are graduates who fail to play positive roles in the society, he added.
"Participants in the first category, be they Emiratis or residents, need to memorise the Holy Quran in full (30 parts) whereas applicants for the second and third branches have to learn by heart 20 and ten parts in turn," Bu Melha said.
This autumn term is the last chance for schools to take part in the charity's free Learn by Heart presentation.
The poem I first think of, from childhood, was the one we were forced to learn by heart, Blake's 'Tiger, tiger, burning bright, In the forests of the night, What immortal hand or eye Could frame thy fearful symmetry?' I promise you, I didn't even have to google that.