moonshine

the word 'moonshine' is a transparent compound from old english elements, literally meaning "the shining of the moon." this concrete sense, referring to moonlight, is attested from the late 15th century. by the late 18th century, the term developed a figurative sense for something insubstantial or deceptive, like empty talk or foolish ideas, much like the pale, reflected light of the moon. this association with illegality and concealment led to its specific application in american english during the prohibition era (1920s) for liquor produced and distributed secretly, often by night under the "moonshine."

Structure: moon (heavenly body) + shine (emit light) 'moon' originates from old english 'mōna', of germanic origin, related to dutch 'maan' and german 'mond'. it functions as the nominal base. 'shine' originates from old english 'scīnan', of germanic origin, related to dutch 'schijnen' and german 'scheinen'. it functions as a verbal element meaning to emit light.