Word Origin & History
late 14c. (twilighting), a compound of twi
- + light
(n.) Cognate with Du. tweelicht (16c.), Ger. zwielicht. Exact connotation of twi- in this word is unclear, but it appears to refer to "half" light, rather than the fact that twilight occurs twice
a day. Cf. also Skt. samdhya "twilight," lit. "a holding together, junction," M.H.G. zwischerliecht, lit. "tweenlight." Originally and most commonly in Eng. with ref. to evening twilight but occasionally used of morning twilight (a sense first attested mid-15c.). Figurative extension is first recorded c.1600.