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The Collaborative International Dictionary
Disrank

Disrank \Dis*rank"\ (?; see Dis-), v. t. [Cf. Derange.]

  1. To degrade from rank. [Obs.]

  2. To throw out of rank or into confusion.
    --Decker.

Wiktionary
disrank

vb. 1 (context obsolete English) To degrade from rank. 2 (context obsolete English) To throw out of rank or into confusion.