Slang for jack of spades Related Terms Urban ThesaurusAce in Black is a playing card in a set of cards. It is considered a representation of enigma, power, and perception. The Jack in ♠ can also mean a person of dark complexion or a person that is proficient in their craft. This playing card
often carries an air for mystery and can signify a need to trust one's own instincts when faced with circumstances.