1930s slang term, according to A Historical Dictionary of American Slang.
- (slang, dated) Sexy, cool.
- That is some ginchy girl!
- 1961, Stanton Delaplane, And How She Grew, Coward-McCann, page 187,
- You should carry a few silver dollars—they are the ginchiest.
- Typically used in the superlative.