ravineravine /rəˈvin/ noun [countable] 
earth science, geography a narrow valley with steep sides, formed by running water SYN gorge
earth science, geography a narrow valley with steep sides, formed by running water SYN gorge- federal debt
- Federal Deposit Insurance Commission, the
- federal funds rate
- federal government
- federalism
- federalist
- Federalist Party
- Federal Open Market Committee, the
- federal republic
- Federal Reserve Bank, the
- Federal Reserve Board, the
- Federal Reserve district
- Federal Reserve note
- Federal Reserve System
- Federal Trade Commission, the
- federate
- federation
- fed up
- fee
- feeble
- feeble-minded
- feeble-mindedly
- feeble-mindedness
- feed
- feedback