/klab"euhr/ , South Midland and Southern U.S.
n.
1. milk that has soured and thickened; curdled milk.
v.i.
2. (of milk) to curdle; to become thick in souring.
Also, clobber .
[ 1625-35; clabar short for bainne clabair BONNYCLABBER ]
Regional Variation . CLABBER has many regional variations, including BONNYCLABBER and its variant BONNYCLAPPER in the Northern and Midland U.S., THICK MILK in the Hudson River Valley and North Midland U.S., LOBBER and its variant LOBBERED MILK in the Inland North, CLOBBER in the South Midland and Southern U.S., and CRUD in some widely scattered areas.