Webster's Revised Unabridged Dictionary · 1913

Etiquette

Etiquette , noun

[French prop., a little piece of paper, or a mark or title, affixed to a bag or bundle, expressing its contents, a label, ticket, Old Frenchestiquete, of German origin; compare LG. stikke peg, pin, tack, stikken to stick, German stecken. See Stick, and compare Ticket.]

The forms required by good breeding, or prescribed by authority, to be observed in social or official life; observance of the proprieties of rank and occasion; conventional decorum; ceremonial code of polite society.
The pompous etiquette to the court of Louis the Fourteenth. — Prescott