PERIOD, limit, end.
PERK, perk up.
PERPETUANA, "this seems to be that glossy kind of stuff now called everlasting, and anciently worn by serjeants and other city officers" (Gifford).
PERSPECTIVE, a view, scene or scenery; an optical device which gave a distortion to the picture unless seen from a particular point; a relief, modelled to produce an optical illusion.
PERSPICIL, optic glass.
PERSTRINGE, criticise, censure.
PERSUADE, inculcate, commend.
PERSWAY, mitigate.
PERTINACY, pertinacity.
PESTLING, pounding, pulverising, like a pestle.