The bottom-most part of a doorway that one crosses to enter; a sill.
"She kicked off her shoes and stepped over the threshold to finally leave the cold rain behind."
In plain English: A threshold is the lowest level needed to start something or trigger a specific result.
"The new puppy was too excited to stay on his owner's side of the threshold."
Usage: Use threshold when referring specifically to the physical strip at the base of a doorframe, rather than general floor areas or other parts of the entryway. This word is often confused with "sill," but they are interchangeable in this context as both describe the bottom edge one steps over to enter.
Example Sentences
"The new puppy was too excited to stay on his owner's side of the threshold."noun
"The threshold of the front door was made of polished stone."noun
"He stood at the financial threshold of buying his first house."noun
"Crossing the age threshold qualified her for the senior discount."noun
The word threshold comes from Old English words meaning "doorsill" or "entryway." Its name originally referred to the act of treading on grain while threshing it.