Entry 2 senses Webster, 1913 Hogwash /häg'-wäshˌ/ · Hog·wash · IPA /ˈhɔɡ.wɑʃ/ 01 n. Swill. 1. Swill. 2. Meaningless talk; nonsense; balderdash; bunk; -- also used as an interjection, expressing scornful disbelief.