PIERIDES
Pi*er"i*des, n. pl. Etym: [L., fr. Gr. Pierian.] (Class. Myth.)

Defn: The Muses.

PIERRE-PERDU
Pierre`-per`du", n. [F. pierre perdue lost stone.]

Defn: Blocks of stone or concrete heaped loosely in the water to make a foundation (as for a sea wall), a mole, etc.

PIET Pi"et, n. Etym: [Dim. of Pie a magpie: cf. F. piette a smew.] (Zoöl.) (a) The dipper, or watter ouzel. [Scot.] (b) The magpie. [Prov.Eng.] Jay piet (Zoöl.), the European jay. [Prov.Eng.] — Sea piet (Zoöl.), the oyster catcher. [Prov.Eng.]

PIETA
Pi*e*tà", n. Etym: [It.] (Fine Arts)

Defn: A representation of the dead Christ, attended by the Virgin
Mary or by holy women and angels. Mollett.

PIETISM
Pi"e*tism, n. Etym: [Cf. G. pietismus, F. piétisme.]

1. The principle or practice of the Pietists.

2. Strict devotion; also, affectation of devotion. The Schöne Seele, that ideal of gentle pietism, in "Wilhelm Meister." W. Pater.