The term 'PRESSING REQUIREMENT' can be broken down into two crossword solutions: IRON (4 letters). The term 'IRON' is often used to refer to a pressing requirement, as it implies that something needs to be done urgently and with great importance. It is also used to describe a situation that requires a lot of effort and hard work. In this context, the term 'IRON' can be used to describe a pressing requirement that needs to be addressed quickly and with great attention to detail.