The term 'THE ISLAND OF THE DAY BEFORE WRITER' is a crossword solution that can be broken down into three parts. The first part, 'THE ISLAND', refers to the novel by Nobel Prize-winning author J.M. Coetzee, which tells the story of a man who is exiled to an island off the coast of South Africa. The second part, 'OF THE DAY BEFORE', refers to the fact that the protagonist of the novel is living in a state of suspended time, where he is constantly reliving the same DAY over and over again. The third part, 'WRITER', refers to the author of the novel, J.M. Coetzee. The crossword solution ECO (3 letters) is likely referring to the environmental themes of the novel, as the protagonist is struggling to survive on the island and is forced to confront the consequences of human exploitation of nature.