Dictionary

citadel

noun cit·a·del \ˈsi-tə-dəl, -ˌdel\

: a castle or fort that in past times was used to protect the people of a city if the city was attacked

Full Definition of CITADEL

1
:  a fortress that commands a city
2
:  stronghold <the nation's citadel of health research — Constance Holden> <a citadel of higher education>
ADVERTISEMENT

Origin of CITADEL

Middle French citadelle, from Old Italian cittadella, diminutive of cittade city, from Medieval Latin civitat-, civitas — more at city
First Known Use: 1562

Other Military Terms

bivouac, logistics, petard, salient, sally, supernumerary, tactical
CITADEL Defined for Kids

citadel

noun cit·a·del \ˈsi-tə-dəl, -ˌdel\

Definition of CITADEL for Kids

:  a fortress that sits high above a city

Browse

Next Word in the Dictionary: citalPrevious Word in the Dictionary: citAll Words Near: citadel
ADVERTISEMENT
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears