Слово встречается в следующем контексте: The next step in Ebru is getting the perfect water bath in which to place the dye. White kitre, a gum like substance, must be place in the Ebru water in order to keep the dye design in place and in order to allow the design to stick to the paper. Fresh kitre is available in herbal shops during the fall, and every marbler buys enough kitre to last an entire year.

Заранее спасибо

См. http://www.eurodict.koralsoft.com/KITRE+searchid-56317-ed_tr_en.html