Benchmark
Etymology
Originally a surveyor’s term: a benchmark was a mark cut into a wall or post to fix a reference height, with an angle-iron “bench” fitted into it to support the leveling rod. From that permanent point of reference came the general meaning of a standard to measure against.
noun · /BENCH-mark/
A standard reference point against which performance or quality is measured.
What it names
The agreed baseline that turns “is this good?” into “how does it compare?” — making a judgment measurable instead of vague.
Example
Last year’s numbers became the benchmark, so every quarter got judged against them.
Related idea
A benchmark is a quantitative level to hit; a touchstone tests genuineness or essential quality rather than measured performance.
noun · /BENCH-mark/
A surveyor’s mark cut into a fixed object to record a known height, used as a reference point for later measurements.
What it names
the permanent elevation marker surveyors return to
Example
Elevations were measured from a brass benchmark set in the bridge.
Related idea
Both the general “standard to measure against” and the computing benchmark test grew from this fixed physical reference; compare touchstone.