[ eg-kawrn ]
/ ˈɛgˌkɔrn /

a word or phrase that is a seemingly logical alteration of another word or phrase that sounds similar and has been misheard or misinterpreted, as 'old wise tale' for 'old wives' tale'.
Compare mondegreen. See also malapropism.

Origin of eggcorn

with reference to a mishearing or misinterpretation of the word acorn Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020