What is "clabbered"

Usage examples of "clabbered".

A west wind picked up, and all morning the clouds came in, a few stipples at first, then a sky-spanning reach of them, like a spill of clabbered milk against a blue dish.

In fact, if he hadn’t been just too damned lazy, he might’ve spared a mind to sneak a peek at what was going on inside the heads of Block and Relway and maybe even that scab of clabbered misery off the Hill, Perilous Spite.

AH I could think of was the gray clabbered skies over Maisry’s body, the kites cir­cling, the crash of Sir Roland’s armor as he undressed—vivid as yesterday.

The man behind the bar nodded as he scooped clabbered milk from a stoneware jug under the bar.