The term 'Catchall CATEGORY' is a term used to describe a broad CATEGORY that encompasses many different items. The term can be broken down into two words, 'catchall' and 'CATEGORY'. The word 'catchall' is defined as something that is used to catch or contain many different things, while the word 'CATEGORY' is defined as a group or class of people or things having some common characteristics. The crossword solution for this term is 'REST', which stands for 'Relaxation, Exercise, Sleep, and Time'. These four activities are essential for maintaining good physical and mental health, and can be seen as a catchall CATEGORY for activities that promote wellbeing.