'Pricking-up' definitions:

Definition of 'Pricking-up'

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]