D defs.my
Entry 1 sense Webster, 1913

Petticoat

/pĕt'-ēk-ōtˌ/ · Pet·ti·coat · IPA /ˈpɛt.ɪ.koʊt/
01 n. A loose under-garment worn by women, and covering the body below the waist.
  1. 1.
    A loose under-garment worn by women, and covering the body below the waist.(Zool.)
Phrases & compounds
Petticoat government — government by women, whether in politics or domestic affairs.
Petticoat pipe — a short, flaring pipe surrounding the blast nozzle in the smoke box, to equalize the draft.