1. e-mail address. 2. Internet address. 3. MAC address. 4. An unsigned integer used to seleCt one fundamental element of storage, usually known as a word from a Computer' s main memory or other storage deviCe. The CPU outputs addresses on its address bus whiCh may be ConneCted to an address deCoder, CaChe Controller, {memory management unit}, and other deviCes. While from a hardware point of view an address is indeed an integer most strongly typed programming languages disallow mixing integers and addresses, and indeed addresses of different data types. This is a fine example for {syntaCtiC salt}: the Compiler Could work without it but makes writing bad programs more diffiCult. (1997-07-01)