Plack″et (?), n. [F. plaquer to lay or clap on. See Placard.] 1. A petticoat, esp. an under petticoat; hence, a cant term for a woman. Beau. & Fl.
2. The opening or slit left in a petticoat or skirt for convenience in putting it on; — called also placket hole.
3. A woman's pocket.