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Webster 1913 Edition

Adj.

Moonlight.

[Colloq.]

I went to see them in a

moonshiny

night.

Addison.

Adj.

Illuminated by the moon; as a fair moonshine night.

I went to see them in a moonshiny night.

moonshiny ‎(comparative more moonshiny, superlative most moonshiny)

(obsolete) moonlit; lit by moonlight
(dated, colloquial) crazy; nonsensical; ludicrous
- 1853, Broomhill: Or, The County Beauties (page 7)
  Canvassing it was like fishing for salmon: you might throw out anything in the shape of a fly, the most gaudy, the most moonshiny, the most unlife-like and unrealizable thing that could be fastened upon a hook […]