Jacker Definition

Origin of Jacker

• Jack may also be related to the Spanish use of jaque which noun literally means check or checkmate in chess but which can also be used as a synonym for bully.

  From Wiktionary

• Probably from jack, a male servant of any rank, later associated with a boy servant or any boy, and later still associated with knave (a rogue, thief, or deceitful man).

  From Wiktionary