cockles of heart

cockles of (one's) heart

The deepest part of oneself. Often used in the phrase "warmed the cockles of (one's) heart." Thank you so much—your kind words really warmed the cockles of my heart.
See also: cockle, heart, of
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

cockles of (one's) heart

One's innermost feelings: The valentine warmed the cockles of my heart.
See also: cockle, heart, of
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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References in periodicals archive ?
Rochdale lad Riccardo, 13, blew away the coaches by taking on Leonard Cohen's Hallelujah, while cute rapper Lil' T, 10, from Leicester, warmed the cockles of hearts with Skepta's Shutdown.