say it: JEE-nuh
jena is a noun meaning "the battle in 1806 in which Napoleon decisively defeated the Prussians". It carries one recorded sense.
the battle in 1806 in which Napoleon decisively defeated the Prussians
Germany
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 jena 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.