Thomas Davidson,
Chambers's Twentieth Century Dictionary 1908…
(1908)
“ File with, to rank with, to be equal to.—Single file, Indian file, of men marching one behind another. [Fr. file—L. filum, a thread.] File, fīl, n. a steel instrument with sharp-edged furrows for smoothing or rasping metals, &c.: any means adopted to polish a thing, as a literary style: a shrewd, cunning person, a deep fellow: a pickpocket.—v.t. to cut or smooth with, or as with, a file: to polish, improve.—n. File′-cut′ter, a maker of files.—adj. Filed, polished, smooth.—ns. File′-fish, a fish of genus Balistes, the skin granulated like a file ”
