ko·lac·ky 
(kə-lächkē, kōläch-) or ko·la·che (kə-lächē, kōlä-)
(kə-lächkē, kōläch-) or ko·la·che (kə-lächē, kōlä-)n. pl. kolacky or kolache also ko·la·ches
A sweet bun made from yeasted dough and usually having a fruit or poppy seed filling.
[Czech koláče, wheel-shaped cake, pl. of koláč, from kolo, wheel; see CALASH.]