- law to contest (a claim, suit, etc)
- to arrange (soldiers) for battle
C13: from Old French deraisnier to defend, from Vulgar Latin ratiōnāre (unattested) to reason
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Examples from the Web for deraign
If it had not, the question was ended; if it had, then we could proceed to deraign to those properly entitled to it.