[ uhn-der-weyst ]
/ ˈʌn dərˌweɪst /


a blouse worn under another.
such a blouse to which other undergarments are pinned or buttoned, worn by infants and small children.

Origin of underwaist

An Americanism dating back to 1855–60; under- + waist
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for underwaist

  • She goes chasing out in her underwaist and petticoat sometimes.

    Winona of the Camp Fire|Margaret Widdemer
  • Materials: Pupils may furnish their own materials for an underwaist such as they wear.

    Handicraft for Girls|Idabelle McGlauflin
  • Is your uncle rich enough for you to have a governessand you go trailing round in your underwaist and petticoat!

    Winona of the Camp Fire|Margaret Widdemer
  • Maria had a beautiful neck showing above the lace of her underwaist.

    By the Light of the Soul|Mary E. Wilkins Freeman