expression
was pretty; was beautiful; was clean
Irregular past tense of 綺麗 (きれい) used in Kansai dialect. Standard Japanese would use 綺麗だった.
See also: 綺麗
あの花、めっちゃ綺麗かったわ。
That flower was really pretty.
部屋、ちゃんと掃除したから綺麗かったで。
The room was clean because I cleaned it properly.