Spall—A chip or flake removed from a larger piece of stone.
Stockade—An enclosure made with posts and stakes.
Stratification—The characteristic of being in layers or strata and the processes by which such material is deposited. A single layer is called a Stratum, more than one, Strata. When undisturbed the lowest stratum is the oldest since it was laid down first.
Trait—Any single element of [culture].
Temper—Non-plastic material added to clay from which pottery is made to prevent cracking.
Twilling—A system of weaving in which the woof thread is carried over one and under two or more warp threads, producing diagonal lines or ribs on the surface of the fabric or basket.
Twining—A system of weaving in which splints or threads are intertwined around a foundation of radiating rods or threads.
Tuff—Solidified volcanic ash.
Typology—The study of any system of arrangement according to type.