Another word I encountered recently in a Thurber essay is fleam.
According to Wikipedia:
A fleam, also flem, flew, flue, fleame, or phleam, was a handheld instrument used for bloodletting.
For a great deal more on that topic, see also A Short History of the Fleam, by Kevin Goodman, who’s described as also being the author of “Ouch! A History of Arrow Wound Treatment from Prehistory to the Nineteenth Century.”
Merriam-Webster’s Unabridged mentions the bloodletting tool, but also notes that fleam can mean:
angle of bevel of the edge of a sawtooth with respect to the plane of the blade