throw ‧ a ‧ way /ˈθrəʊəweɪ $ ˈθroʊ-/ BrE AmE adjective [only before noun]
1 . throwaway remark/line/comment etc something that someone says or writes quickly, without thinking carefully about it:
It was only a throwaway comment.
He claims people overreacted to a few throwaway lines in the article.
2 . throwaway products have been produced cheaply so that you can throw them away after you have used them SYN disposable :
a throwaway cigarette lighter
3 . throwaway society used to show disapproval when talking about modern societies in which products are not made to last a long time