someone's heart is knocking
Definition of someone's heart is knocking
—used to say that a person's heart is beating very hard, usually from nervousness or excitement His heart was knocking as he waited to meet his blind date.
Word by Word Definitions
: some person : somebody
: to strike something with a sharp blow
: to collide with something
: a sharp blow : rap, hit
: a severe misfortune or hardship
: setback, reversal
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