D defs.my
Entry 2 senses Webster, 1913

Recusation

/(r?k`?*z?"sh?n)/ · Rec·u·sa·tion · IPA
01 n. Refusal.
  1. 1.
    Refusal.[Obs.]
  2. 2.
    The act of refusing a judge or challenging that he shall not try the cause, on account of his supposed partiality.(Old Law)