beaverteen

from The Century Dictionary.

• noun A cotton twilled fabric in which the warp is drawn up into loops, forming a pile, which is left uncut.
• noun A strong cotton twilled fabric for men's wear. It is a kind of smooth fustian, shorn after being dyed. If shorn before dyeing, it is called moleskin. E. H. Knight.

from the GNU version of the Collaborative International Dictionary of English.

• noun A kind of fustian made of coarse twilled cotton, shorn after dyeing.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A kind of fustian made of coarse twilled cotton, shorn after dyeing.