For S4S we have a term and definition in Wood.

An abbreviation for "surfaced on four sides". These boards get planed on both faces, and then ripped on both edges to make them parallel, shown above. Most often, this process produces "dimensional" lumber in standard sizes, such as 1x6, 2x4, and so forth. You'll find softwood construction lumber sold this way, as well as hardwoods in home centers.
See more Wood Terms ...
Browse words that start with: