The term 'Miami Five' refers to the five members of the Miami HEAT basketball team, which is based in Miami, Florida. The four-letter solution for this term is 'HEAT', which is an acronym for the team's name. The Miami HEAT are a professional basketball team that competes in the National Basketball Association (NBA). They have won three NBA championships and have been one of the most successful teams in the league since their formation in 1988.