recusation: (law) an objection grounded on the judge's relationship to one of the parties
objection: (law) a procedure whereby a party to a suit says that a particular line of questioning or a particular witness or a piece of evidence or other matter is improper and should not be continued and asks the court to rule on its impropriety or illegality
powder: a solid substance in the form of tiny loose particles; a solid that has been pulverized