Strike headfirst is a term used to describe a situation in which someone dives into a task without hesitation or preparation. The term is often used in sports, such as diving into a pool or tackling a football player. In this crossword, the solution for the term strike headfirst is RAM, which stands for Random Access Memory. RAM is a type of computer memory that stores data and can be accessed randomly. It is used to store information that is frequently used by the computer, such as programs and applications.