The definition of a capitol is the building where a legislature meets.
(noun)An example of a capitol is the building where the U.S. Congress meets in Washington, D.C.
See Capitol in Webster's New World College Dictionary
noun
Origin: ME & OFr capitolie < L Capitolium, temple of Jupiter in Rome; < ? (but possibly related to caput, head)
See Capitol in American Heritage Dictionary 4
noun
Origin:
Origin: Middle English Capitol, Jupiter's temple in Rome
Origin: , from Old French capitole
Origin: , from Latin Capitōlium
Origin: , after Capitōlīnus, Capitoline, the hill on which Jupiter's temple stood
Origin: ; perhaps akin to caput, capit-, head; see Capital 1
.Learn more about Capitol