An adminicle is a support put in evidence to buttress the structure of an argument or contention in adjudication.    From LearnThat.org.  [http://www.sirbacon.org/wheelersemiosis.html]

While looking for something entirely different in the Cassell Concise Dictionary, I ran across the word adminicle, defined as.    From Wordnik.com.  [languagehat.com: ADMINICLE.] Reference