say it: EM-pur-ur
emperor is a noun meaning "the male ruler of an empire". It carries 4 recorded senses.
the male ruler of an empire
red table grape of California
large moth of temperate forests of Eurasia having heavily scaled transparent wings
large richly colored butterfly
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 emperor 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.