| Placket 1. (n.) A petticoat, esp. an under petticoat; hence, a cant term for a woman. 2. (n.) The opening or slit left in a petticoat or skirt for convenience in putting it on; -- called also placket hole. 3. (n.) A woman's pocket. Thesaurus Entries air hole, armhole, blowhole, bullet-hole, bunghole, cringle, deadeye, eye, eyelet, gasket, grommet, guide, keyhole, knothole, loop, loophole, manhole, mousehole, peephole, pigeonhole, pinhole, placket hole, porthole, punch-hole, spiracle, tap, vent, venthole | ![]() |