MOONLIGHT
moonlight, moonshine, Moon
(noun) the light of the Moon; “moonlight is the smuggler’s enemy”; “the Moon was bright enough to read by”
moonlight
(verb) work a second job, usually after hours; “The law student is moonlighting as a taxi driver”
Source: WordNet® 3.1
Etymology
Noun
moonlight (usually uncountable, plural moonlights)
(sometimes, attributive) The light reflected from the Moon.
Hypernyms
• light
Verb
moonlight (third-person singular simple present moonlights, present participle moonlighting, simple past and past participle moonlighted)
To work on the side (at a secondary job), often in the evening or during the night.
(by extension) To engage in an activity other than what one is known for.
(by extension, of an, inanimate object) To perform a secondary function substantially different from its supposed primary function, as in protein moonlighting.
Usage notes
In American English, to moonlight is simply to work at secondary employment; in British English, it used to imply working secretly (i.e. not paying tax on the extra money earned), but more recent editions of some UK dictionaries no longer differentiate between the US and UK meaning; in both, legality of moonlighting is thus qualified with adjectives.
Source: Wiktionary
Moon`light`, n.
Definition: The light of the moon.
– a.
Definition: Occurring during or by moonlight; characterized by moonlight.
Source: Webster’s Unabridged Dictionary 1913 Edition