smearer
n.— «Smearer. Conceited worker who feels superior to other mechanics.» —“Machinists’ Slang and Jargon [“add machinists”]” by Mendelowitz in Wisc., Ohio, N.Y., Ind., Mich., Ala. Lexicon of Trade Jargon , 1938-39. (source: Double-Tongued Dictionary)