say it: BAHY-suhn
bison is a noun meaning "any of several large humped bovids having shaggy manes and large heads and short horns". It is pronounced /ˈbaɪsən/ — BAHY-suhn. It carries one recorded sense.
any of several large humped bovids having shaggy manes and large heads and short horns
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 bison 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.