The term 'RETIRE' is a 6-letter crossword solution for the phrase 'REMOVE FROM ACTIVE SERVICE'. It is used to describe the process of ending one's career or service in a particular field, such as the military, government, or a profession. This usually involves a formal ceremony or recognition of the individual's accomplishments. Retirement can also refer to the period of time after one has left their job or service, during which they are no longer actively employed.