Source : Webster's Revised Unabridged Dictionary (1913)

Hogwash \Hog"wash`\, n.
   Swill. --Arbuthnot.

Source : WordNet®

hogwash
     n : unacceptable behavior (especially ludicrously false
         statements) [syn: {bunk}, {bunkum}, {buncombe}, {guff}, {rot}]