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from Latin pignerātīcius (adj.), belonging to a pledge
1656 - Glossographia, Thomas Blount;
"Pigneratitious, that which is laid in pledge, or pertaining to gage"
From: Practical Observations Upon Divers Titles of the Law of Scotland,
Commonly Called Hope's Minor Practicks,
By Sir Thomas Hope, 1734
Title: VI, Of Wadsets and Reversions