SPEARHEADS: Projectile points 3 to 6 or 6½ inches long presumed to have been used to tip spears.
SPEARTHROWER (ATLATL): A short stick by which increased leverage is obtained in hurling a spear. It gives greater range and an accuracy comparable to the bow at shorter distances.
SPEARTHROWER WEIGHT: A weight secured to the [spearthrower] for controlling it and increasing the speed of the spear.
SPEAR, THRUSTING: A long spear that is fitted with a long, narrow head generally without barbs or shoulders, that can be easily withdrawn from a wound. It is primarily for use in the hand, not for throwing.
SPECIALIZATION (CRAFT): An occupation in which a man or [household] of a primitive community engages primarily to the considerable exclusion of the general economic pursuits or the remainder of his group. It should not be confused with the production of a highly skilled craftsman.
SPECIALIZATION (OF TOOLS): Applies to numerous variations in the forms derived from a general artifact type presumably to accomplish better and more easily certain special requirements of construction or manufacture.
STAGE (CULTURAL): One of the major periods into which cultures may be divided by virtue of its degree of development which depends primarily on the fundamental invention that ushered it in.
SPIRITUAL ASPECT: That division of primitive [culture] concerned primarily with tribal values, [religion], recreation and the arts.
STATUS (CULTURAL): A subdivision of a [stage]. A [substage].
STONE: Unless otherwise noted any kind of stone generally used by primitive peoples for [pecking], [grinding] and [polishing] into weapons, tools, etc., for example, granite, greenstone, gneiss, shale, limestone, basalt.