The term "Little Rock" can refer to several different things depending on context.
1) Little Rock is a city in Arkansas, USA and could be used as a reference point for geographical location or population statistics.
2) In history, Little Rock refers to the events surrounding desegregation of public schools in Arkansas in 1957 when nine African-American students were denied entry into Central High School in Little Rock despite a Supreme Court ruling in their favor. This event is known as the "Little Rock Nine" and played an important role in the Civil Rights Movement.
3) In popular culture, Little Rock could refer to the band "The Little River Band," or the movie "The Rock" starring Sean Connery and Nicolas Cage which was filmed in part in Little Rock, Arkansas.