SG Heritage Dictionary

Missy [Noun] Webster's Dictionary 1828

The sulphate of iron, having lost the water of its crystallization, is called sori; more thoroughly calcined, it is yellow, and called missy

Missy [Adjective] Webster's Dictionary 1913

Like a miss, or girl.

Missy [Noun] Webster's Dictionary 1913

1. See Misy.

2. An affectionate, or contemptuous, form of miss; a young girl; a miss.