capitol hill is a noun meaning "a hill in Washington, D.C., where the Capitol Building sits and Congress meets". It carries one recorded sense.
a hill in Washington, D.C., where the Capitol Building sits and Congress meets
“they are debating the budget today on Capitol Hill”
Definitions, synonyms and semantic relations for capitol hill come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.