Stock, a stalk.
Stot, to stagger.
Stoup, a deep and narrow wooden vessel for holding water.
Sugh, to breathe heavily.
Sumf, sumph, a stupid, silly fellow; a blockhead.
Sunks, a saddle.
Supple, the part of a flail that strikes the grain.
Sutter, sutor, a shoemaker.
Swabing, a beating.
Swats, small beer.