Definition of rush-bottom in US English:

rush-bottom

adjective

  • Of a chair: having a seat made of rush. Also of the seat of a chair: made of rush.

noun

  • 1A chair seat made of rush.

  • 2An area of bottomland characterized by an abundance of rushes.

Origin

Early 18th century. From rush + bottom. Compare earlier rush-bottomed.

Pronunciation

rush-bottom

/ˈrʌʃˌbɒtəm/