MEDITATE (ON) is an activity that involves focusing one's mind on a particular thought or activity in order to achieve a higher level of mental clarity and relaxation. The crossword solutions for this term are CHEW (4 letters) and MUSE (4 letters). CHEW is an activity that involves grinding food in the mouth with the teeth, while MUSE is an activity that involves deep thought or contemplation. Both activities can be seen as forms of meditation, as they involve focusing the mind on a single task.