'Scratch coat' definitions:

Definition of 'Scratch coat'

From: GCIDE

Scratch coat \Scratch" coat`\ The first coat in plastering; -- called also scratchwork. See Pricking-up. [1913 Webster]

Definition of 'scratch coat'

From: GCIDE

Pricking-up \Prick"ing-up\, n. (Arch.) The first coating of plaster in work of three coats upon laths. Its surface is scratched once to form a better key for the next coat. In the United States called scratch coat. --Brande & C. [1913 Webster]

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