'Underskirt' definitions:

Definition of 'underskirt'

(from WordNet)
noun
Undergarment worn under a skirt [syn: petticoat, half- slip, underskirt]

Definition of 'Underskirt'

From: GCIDE
  • Underskirt \Un"der*skirt`\, n. A petticoat; the foundation skirt of a draped dress. [1913 Webster]