Adminicle
Adminicle ({not transcribed}) , noun
[Latin adminculum support, orig., that on which the hand rests; ad + manus hand + dim. ending -culym.]
1.
Help or support; an auxiliary. — Grote
2.
(Law) Corroborative or explanatory proof.
In Scots law, any writing tending to establish the existence or terms of a lost deed. Bell.