The crossword solution for the term 'Word before 'PUMP' or 'POCKET'' is AIR, which is a three-letter word. AIR is a naturally occurring substance composed of nitrogen, oxygen, and other gases, and is essential for all known forms of life. It is the most abundant gas in Earth's atmosphere, and is the primary component of Earth's hydrosphere. AIR is also the name of one of the four classical elements in ancient Greek philosophy and science.