(1):
(n.) The act of calling or summoning by a sacred name, or in solemn manner; the act of binding by an oath; an earnest entreaty; adjuration.
(2):
(n.) A league for a criminal purpose; conspiracy.
(3):
(n.) The act or process of invoking supernatural aid by the use of a magical form of words; the practice of magic arts; incantation; enchantment.