Parchment
Defined in 3 dictionaries — Ballentine's (1916), Black's (1910), Anderson (1889)
Ballentine's Law Dictionary
James A. Ballentine · 1916
A document written on parchment.
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
Sheep-skins dressed for writing, so called from Pergamus, Asia Minor, where they were invented. Used for deeds, and used for writs of summons in England previous to the judicature act, 1875. Wharton.
A Dictionary of Law
William C. Anderson · 1889