"threshold"

so what does a "threshold" hold? nothing!

• Middle English threschwolde / threscholde ("threshold")
  • Old English þrescold / þrexold / þrexwold ("entryway")
    • Proto-Germanic þreskaną ("to tread")
      • PIE *terh1 ("to turn", "to rub", "to drill")

so, "threshold":

• has to do with "the beginning of something"
  • which comes from "going into something"
    • which goes back to "rubbing into it" or "drilling into it"
• has nothing to do with "holding"
  • … we should not see it as thres-hold

(do we also know that English has the word thresh?)