Inkarian wool was a material used in clothing.
In late 2372, Elim Garak made Constable Odo a uniform out of Inkarian wool after Odo was transformed into a Human by the Founders. Odo commented that the uniform itched, to which Garak joked that he hoped he wasn't allergic to it. (DS9: "Broken Link")
According to the script, the pronunciation for Inkarian was "in-KAR-ee-an".