What does LS mean in the 2003 Buick regal?

In the 2003 Buick Regal, "LS" designates a specific trim level, which is the base model of the Regal lineup. The LS trim typically includes standard features and options that provide a balance of comfort and performance without the additional luxury amenities found in higher trims like the GS. It is aimed at buyers looking for a reliable and practical sedan.