The conjuror astonished the crowd by making a dove appear from his sleeve.

conjuror 是由动词 conjure（变魔术、召唤）加上后缀 -or（表示"做...的人"）构成的名词，指"变魔术的人"，即"魔术师"。conjure 本身源自拉丁语，原意是"召唤、祈求"，后来引申为"用魔法变出"的意思。