Definition from Wiktionary, the free dictionary
- IPA: /ˈbʌkrəm/
Etymology 1 
- A coarse cloth of linen or hemp, stiffened with size or glue, used in garments to keep them in the form intended, and for wrappers to cover merchandise.
- 1882: Buckram was probably from the first a stiffened material employed for lining, often dyed. — James Edwin Thorold Rogers, A History of Agriculture and Prices in England, Volume 4, p. 557.
- (transitive) To stiffen with or as if with buckram.
Etymology 2 
Alternative forms 
buckram (plural buckrams)