SCREW n.
der in the grooves between the threads of the perforation adapted to it, the former being distinguished as the external, or male screw, or, more usually the screw; the latter as the internal, or female screw, or, more usually, the nut.
SERF n.
s of France and Germany, persons in this abject state seem to have been called serfs, and distinguished from villeins, who were only bound to fixed payments and duties in respect of their lord, though, as it seems, without any legal redress if injured by him. Hallam.