The Collaborative International Dictionary of English v.0.48:
Wish-wash \Wish"-wash`\, n. Any weak, thin drink. [1913 Webster]WordNet (r) 3.0 (2006):
wish-wash n 1: any thin watery drink 2: nonsensical talk or writing [syn: folderol, rubbish, tripe, trumpery, trash, wish-wash, applesauce, codswallop]