The Collaborative International Dictionary of English v.0.48:
Hogwash \Hog"wash`\, n. 1. Swill. --Arbuthnot. [1913 Webster] 2. Meaningless talk; nonsense; balderdash; bunk; -- also used as an interjection, expressing scornful disbelief. [PJC]WordNet (r) 3.0 (2006):
hogwash n 1: unacceptable behavior (especially ludicrously false statements) [syn: bunk, bunkum, buncombe, guff, rot, hogwash]