Meaning

verb summon into action or bring into existence, often as if by magic

verb ask for or request earnestly

verb engage in plotting or enter into a conspiracy, swear together

originFrom Middle English conjuren, from Old French conjurer, from Latin coniūrō (“to swear together; conspire”), from con- (“with, together”) + iūro (“to swear or take an oath”).

Etymology from Wiktionary, CC BY-SA 3.0