What is "coatees"

Usage examples of "coatees".

Except for Ian and Kyle Mac­donald —who wore full Scottish fig, including Balmoral bonnets with rakish feathers, kilts, fancy shirts with lacy jabots at the neck, and black velvet Prince Charlie coatees with square jeweled but­tons—the gents were a muted symphony in dove gray.

Bruce Scott, owner of the men's store, had told him the evening would be informal: no Prince Charlie coatees, no fur sporrans, and no fringed plaids thrown over the shoulder and anchored with a poached egg.