adverb
by committing to memory (Freq. 1)
-
she knew the poem by heart
• Syn: ↑by memory
* * *
by heart
1. By rote
2. In the memory
• • •
Main Entry: ↑heart
* * *
from memory
* * *
by heart
She knows the entire poem by heart. [=she has learned the poem and can recite it from memory]
He learned the speech by heart.
• • •
Main Entry: ↑heart
* * *
by ˈheart idiom
(BrE also off by ˈheart) using only your memory
•
I've dialled the number so many times I know it by heart.
•
She's learnt the whole speech off by heart.
Useful english dictionary. 2012.