- moonlight (v.)
- "hold a second job, especially at night," 1957 (implied in moonlighting), from moonlighter (1954), from the notion of working by the light of the moon; see moonlight (n.). Related: Moonlighting. Earlier the word had been used to mean "commit crimes at night" (1882).
- moonlight (n.)
- "light of the moon," mid-14c., from moon (n.) + light (n.).
