mondegreen

enUK

mon·de·green

M0383050 (mŏn′də-grēn′, môn′-)n. A series of words that result from the mishearing or misinterpretation of a statement or song lyric. For example, I led the pigeons to the flag for I pledge allegiance to the flag.
[After (Lady) Mondegreen, a misinterpretation of the line (hae laid) him on the green, from the song "The Bonny Earl of Murray".]

mondegreen

(ˈmɒndɪˌɡriːn) n (Literary & Literary Critical Terms) a word or phrase that is misinterpreted as another word or phrase, usually with an amusing result[C20: from the Scottish ballad 'The Bonny Earl of Murray', in which the line laid him on the green can be misheard as Lady Mondegreen]

mon•de•green

(ˈmɒn dɪˌgrin)
n. a word or phrase resulting from a misinterpretation of a word or phrase that has been heard. [1954; coined by American author S. Wright fr. the line laid him on the green, interpreted as Lady Mondegreen, in a Scottish ballad]