The crossword solution for the term 'Sign to take out the trash' is 'ODOR'. This is a reference to the common phrase 'take out the trash', which is used to refer to the task of removing garbage from a home or other building. The word 'ODOR' is used to describe the smell of something, and in this case it is used to indicate that the task of taking out the trash should be done regularly in order to prevent unpleasant odors from accumulating.