3. The quality or state of being proper; suitableness to an acknowledged or correct standard or rule; consonance with established principles, rules, or customs; fitness; appropriateness; as, propriety of behavior, language, manners, etc. "The rule of propriety," Locke.

PROPROCTOR
Pro*proc"tor, n. Etym: [Pref. pro- + proctor.] [Eng. Univ.]

Defn: A assistant proctor. Hook.

PROPS
Props, n. pl.

Defn: A game of chance, in which four sea shells, each called a prop, are used instead of dice.

PROPTERYGIUM
Prop`te*ryg"i*um, n; pl. Propterygia. Etym: [NL., fr. Gr. (Anat.)

Defn: The anterior of three principal cartilages in the fins of some
fishes.
— Prop`ter*yg"i*al, a.

PROPUGN
Pro*pugn", v. t. Etym: [L. propugnare; pro for + pugnare to fight.]

Defn: To contend for; to defend; to vindicate. [Obs.] Hammond.

PROPUGNACLE
Pro*pug"na*cle, n. Etym: [L. propugnaculum.]