D defs.my
Entry 2 senses Webster, 1913

Jackman

/jăk'-mən/ · Jack·man · IPA /dʒˈækmən/
01 n. One wearing a jack; a horse soldier; a retainer. See 3d Jack, n.
pl. Jackmen
  1. 1.
    One wearing a jack; a horse soldier; a retainer. See 3d Jack, n. See: Jack
    “Christie . . . the laird's chief jackman.” Sir W. Scott.
  2. 2.
    A cream cheese.[Obs.]