placket noun. ['plakɪt] E17.
[Alt. of PLACARD noun. Cf. earlier PLACCATE.]
1. An apron, a petticoat; transf. a woman. arch. E17.

2. An opening or slit in a garment, for fastenings or access to a pocket; a flap of fabric under such an opening. E17.
b. The vagina. coarse slang. E17-E18.

3. A pocket, esp. in a woman's skirt. M17.

Comb.:
placket-hole an opening in a garment to give access to a pocket.

[TahlilGaran] English Dictionary ▲