A hamburger from the fast food company McDonald's, served on a three-part bun with various condiments.

(finance, informal) The Federal Home Loan Mortgage Corporation (FHLMC), a private, stockholder-owned corporation sponsored by the US government, established in 1968 to provide market competition for the Federal National Mortgage Association.

(informal) An Apple Macintosh computer.

plural of MAC address

(US, informal) macaroni and cheese

plural of mac salad

Clipping of macaroni salad.

(Britain) A lightweight rainjacket that can be compressed into a small pocket-sized bag.

(computing, networking) an obsolete EUI used to address hardware interfaces within existing IEEE 802-based networking applications

(Irish mythology) The god of the sea.