The term 'Last Leg Runner' is a job description for an ANCHOR, which is a person who is responsible for the final stage of a relay race. The ANCHOR must be able to run quickly and accurately in order to ensure that their team wins the race. They must also be able to handle the pressure of the last leg of the race and be able to stay focused on the task at hand. The ANCHOR is the last line of defense for the team and must be able to perform under pressure.