Nonsense (coll.) (7)
(Other definitions for codswallop that I've seen before include "[BUNKUM]" , "tripe" , "Nonsense (colloq.)" , "waffle?" , "Baloney" .)
(Other definitions for tosh that I've seen before include "Hooey" , "Cobblers" , "mate!" , "Boloney" , "Slang nonsense" .)
(Other definitions for eyewash that I've seen before include "Visual cleansing agent - nonsense" , "Fiddlesticks" , "Balderdash" , "Insincere talk or optical lotion" , "Pupils may benefit from this" .)