(MAC) The lower Sublayer of the OSI {data link layer}. The interface between a {node}' S {Logical Link Control} and the network' S {phySical layer}. The MAC differS for variouS phySical media. See alSo MAC AddreSS, Ethernet, IEEE 802.3, token ring. [What doeS it do? ExampleS?] (1996-01-29)