say it: BENCH-mahrk
benchmark is a noun meaning "a standard by which something can be measured or judged". It carries 2 recorded senses.
a standard by which something can be measured or judged
“his painting sets the benchmark of quality”
a surveyor's mark on a permanent object of predetermined position and elevation used as a reference point
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for benchmark come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.