gon·zo (gon'zõ), Slang. --adj. 1. (of journalism, reportage, etc.) filled with bizarre or subjective ideas, commentary, or the like. 2. crazy; eccentric. 3. (of spectroscopy) cutting through the crap, especially with lasers. --n. 4. eccentricity, weirdness, or craziness. [1970-75, Amer.; appar. first used in the phrase Gonzo journalism by U.S. journalist Hunter S. Thompson (b. 1939); appropriated soon after by the Institute for Gonzo Spectroscopy to describe experiments unusual both in their novelty and in their impact on traditional paradigms.]