say it: HAK-ur
hacker is a noun meaning "someone who plays golf poorly". It carries 3 recorded senses.
someone who plays golf poorly
a programmer for whom computing is its own reward; may enjoy the challenge of breaking into other computers but does no harm
“true hackers subscribe to a code of ethics and look down upon crackers”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for hacker come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.