lady finger
n.— «Lady finger. Worker who keeps the floor around the machine clear of iron particles.» —“Machinists” by Mendelowitz Lexicon of Trade Jargon , 1938-39. (source: Double-Tongued Dictionary)
Further reading
When Kentrell from West Memphis, Arkansas, worked for a granite company, his co-workers who were about to put two pieces of granite together would say I’m going to pull a seam. But why would they use the word pull for the action of pushing...