Webster's Revised Unabridged Dictionary · 1913

Darraign

Darraign , transitive verb

[Old French deraisnier to explain, defend, to maintain in legal action by proof and reasonings, Late Latin derationare; de- + rationare to discourse, contend in law, from Latin ratio reason, in Late Latin, legal cause. Compare Arraign, and see Reason.]

1.
To make ready to fight; to array. [Obsolete]
Darrain your battle, for they are at hand. — Shakespeare
2.
To fight out; to contest; to decide by combat. [Obsolete]
To darrain the battle. — Chaucer

Also: Darrain