H4682 — מַצָּה

matstsah (mats-tsaw') n-f. 1. (properly) sweetness 2. (concretely) sweet (i.e. not soured or bittered with yeast) 3. (specifically) an unfermented cake or loaf 4. (elliptically) the festival of Passover (because no leaven was then used) [from H4711 in the sense of greedily devouring for sweetness] KJV: unleaved (bread, cake), without leaven. Root(s): H4711