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HACKER [originally, someone who makes furniture with an axe] n. 1. A
person who enjoys learning the details of programming systems and how
to stretch their capabilities, as opposed to most users who prefer to
learn only the minimum necessary. 2. One who programs
enthusiastically, or who enjoys programming rather than just
theorizing about programming. 3. A person capable of appreciating hack
value (q.v.). 4. A person who is good at programming quickly. Not
everything a hacker produces is a hack. 5. An expert at a particular
program, or one who frequently does work using it or on it; example:
"A SAIL hacker". (Definitions 1 to 5 are correlated, and
people who fit them congregate.) 6. A malicious or inquisitive meddler
who tries to discover information by poking around. Hence
"password hacker", "network hacker".