1) Anglo-American card game 2) Dairy product 3) Four-player card game 4) To sour or curdle 5) Turn into curds 1) Curdle 2) Curds 3) Lobber 
Clabber is a four player trick-taking card game that is played in Southwestern Indiana, near Evansville, IN. Clabber is a member of the Jack-Nine family of card games that are popular in Europe. The game is a four player variation of Klaberjass, which was brought to the area by 19th-century German immigrants. The game differs from Euchre in that y...[food] Clabber is a food produced by allowing unpasteurized milk to turn sour at a specific humidity and temperature. Over time, the milk thickens or curdles into a yogurt-like substance with a strong, sour flavor. In rural areas of the Southern United States, it was commonly eaten for breakfast with brown sugar, nutmeg, cinnamon, or molass...
• (n.) Milk curdled so as to become thick. • (v. i.) To become clabber; to lopper.
Clab'ber intransitive verb To become clabber; to lopper. Clab'ber noun [ See Bonnyclabber ] Milk curdled so as to become thick. 
[n] - raw milk that has soured and thickened
noun raw milk that has soured and thickened