Halfway has 6 different meanings across 3 categories:
Half of the way between two points; midway.
"The halfway point on our hike is marked by an old oak tree."
In plain English: Halfway means being exactly in the middle of something, neither at the start nor at the end.
"We stopped for lunch halfway through our long drive to visit my aunt in California."
Usage: Use "halfway" to describe position or progress rather than time, as in "we are halfway through the book." Do not use it with a specific duration unless paired with "to," such as "it took us halfway an hour."
A community in Restigouche County, New Brunswick, Canada.
"We drove to Halfway for a quick stop before continuing our journey through Restigouche County."
The word halfway comes from Middle English, where it originally meant "on the middle part of a journey." It entered modern usage as a straightforward combination of half and way to describe being midway between two points.