1. [noun] (US) (slang) a federal government officer or official, especially FBI and DEA agents.
2. [noun] (London) (especially MLE) (slang) a police officer.
3. [verb] Simple past tense and past participle of feed
4. [noun] (electronics) field emission display.
5. [noun] Any federal law-enforcement officer.
6. [noun] The central bank of the United States; incorporates 12 Federal Reserve branch banks and all national banks and state-chartered commercial banks and some trust companies; 'the Fed seeks to control the United States economy by raising and lowering short-term interest rates and the money supply'.