petersham noun. ['pi:tǝʃ(ǝ)m] E19.
[Viscount Petersham (1790-1851), English army officer.]
1. Hist.
a. In pl. Wide trousers gathered at the ankle to form a flounce, fashionable during the Regency period in Britain. Also Petersham trousers. E19.
b. A kind of heavy overcoat with a short shoulder cape, fashionable during the Regency period in Britain; a thick woollen fabric used to make such coats. M19.

2. A narrow heavy ribbed cotton or silk used for strengthening, esp. of belts and hatbands. L19.

[TahlilGaran] English Dictionary ▲