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(n.) one who prevents another from getting into college
(v.) any action that impedes or stalls another's admission into college
(n.) Since we both wanted to get into Brown, Bob (and his high SAT score) acted as a college block to my ambitions.

(v.) Bob college blocked me by telling the Brown admissions representative/interviewer that I had cheated to get through high school.
by lolwutgg February 08, 2010