Definition of "clabber" []

• Chiefly Southern, Midland, & Western U.S. Sour, curdled milk. Also called regionally thick milk. (noun)
• To curdle. (verb-transitive)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "To make cottage cheese, allow a quantity of sour milk to clabber, that is, become curdled, and then place it on the back of the stove in a thick vessel, such as a crock, until the whey begins to appear on the top, turning it occasionally so that it will heat very slowly and evenly."
• "Page 7 the full-flowering clover-field, or to the plantation nursery to see the old mammies feed the babies with "clabber," with bread well crumbed in it, or cush, made of bread soaked in gravy and softly mashed."
• "Carlene Godwin Finney to clabber gangrene close down her place her precious private pleasing place to fill the house to the rafters up past the dimpled tin roof with a rotting smell that stayed for nine days that mortgaged a room on our memories and did not die along with her"