ALL meanings of frederick william iv
Fred·er·ick Wil·liam IV
F f - noun frederick william iv 1795–1861, king of Prussia 1840–61 (brother of William I of Prussia). 1
- noun frederick william iv 1795–1861, king of Prussia (1840–61). He submitted to the 1848 Revolution but refused the imperial crown offered by the Frankfurt Parliament (1849). In 1857 he became insane and his brother, William I, became regent (1858–61) 0