moonlightPronunciation: /ˈmuːnlʌɪt/Translate moonlight | into French | into German | into Italian | into Spanish Definition of moonlight noun [mass noun] the light of the moon:the river glittered under the pale moonlight [as modifier]:a moonlight stroll verb (past and past participle moonlighted) [no object] informal have a second job, typically secretly and at night, in addition to one’s regular employment: he had been moonlighting for a rival tabloidDerivatives moonlighter noun moonlight in other Oxford dictionaries Definition of moonlight in the US English dictionary