- the rulers of the Holy Roman Empire, 962-1806
- the rulers of Austria, 1804-1918
- the rulers of Germany, 1871-1918
Origin of kaiserMiddle English caiser, probably via Old Norse keisari, akin to Old Frisian keisar, Old High German keisar from Gothic kaisar, ultimately from Classical Latin Caesar, family name of first Roman emperors; reinforced, especially in senses kaiser and , by German kaiser
- Any of the emperors of the Holy Roman Empire (962-1806), of Austria (1804-1918), or of Germany (1871-1918).
- Used as the title for such a man.
Origin of KaiserGerman from Middle High German keiser from Old High German keisar from Latin Caesar ; see caesar .
- the German Emperor, often specifically Wilhelm II
From German Kaiser (“emperor”).