- to exhibit pride or haughtiness; put on airs.
Origin of pross1
perhaps Scots variant, in v. use, of prowess
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for prossy
In spite of the camp's curiosity, for the next few days they delicately withheld their usual evening visits to Prossy's mother.Trent's Trust and Other Stories