Modern design is one of those terms in home decor that feels like a moving target. Modern, by its definition according to Webster's Dictionary, is "of, relating to, or characteristic of the present or the immediate past; contemporary."So what does that mean when "of the present or the immediate past" is constantly moving forward? "Modern design is open-concept, with clean lines, and a flow through a home without clutter," explains Sallie Lord, principal and founder of Virginia-based GreyHunt Interiors.