D defs.my
Entry 2 senses Webster, 1913

Pursuer

/pẽrs-o͞o'-ẽr/ · Pur·su·er · IPA /pərsˈuːər/
01 n. One who pursues or chases; one who follows in haste, with a view to overtake.
  1. 1.
    One who pursues or chases; one who follows in haste, with a view to overtake.
  2. 2.
    A plaintiff; a prosecutor.(Eccl. & Scots Law)