saddle-cloth

/S AE1 D AH0 L K L AO0 TH/
noun
  1. 1

    A blanket placed under a saddle, a saddle blanket.

  2. 2

    A cloth displaying a racehorse's number.

Source: https://en.wiktionary.org/wiki/saddle-cloth, https://en.wiktionary.org/wiki/saddlecloth