An expert or specialist in computer science; a student of computer science.

A person who uses computers, either professionally or as a hobby; a computer specialist or enthusiast.

colloquial (originally U.S.). A person with an enthusiastic interest in computer systems, esp. one who is skilled at programming. Cf. hack, v.1 15a.

colloquial (chiefly U.S.). An expert in or enthusiast for technology, esp. computing; (also) a technician. Cf. techy, adj.1

In full computer hack. A person who is skilled at using computers, either for pleasure or in order to gain unauthorized access to systems or…

(a) an enthusiastic and skilful computer programmer or user; = hacker, n. 3b; (b) a person who attempts to gain unauthorized access, esp. remotely…

slang (chiefly U.S.). spec. A person who is extremely devoted to and knowledgeable about computers or related technology.

An enthusiast for or expert in technology, now esp. computer technology; = techie, n. 3.

An enthusiast for or expert in technology; = tech-head, n.

a person who is extremely knowledgeable about or (obsessively) interested in computer technology (esp. the internet), often regarded as lacking…

a person regarded as being very knowledgeable about computers and related technology, esp. the most knowledgeable in a given group or community; cf…