Garboon, n. Garbage can, ash can. First use I know of was ca. 1970 by Howard Morgan, John Reykjalin, two frat brothers from MIT who shared a house in Watertown, Mass. Stem garb- plus suffic -oon, "big one," but also there is at least a jint of onomatapoeia here (ever throw one down a flight of stairs?" Appeared in the title of a silver miniature ("Garboon Carrier") of a municipal dustman's cart, in a two-man show at the Vendo Nubes Gallery in Phildelphia in 1974.
The example Jalopnik gives would appear to verb the noun above (a common enough phenomenon in English), apparently in the sense of "turn into trash."