D defs.my
Entry 1 sense Webster, 1913

Countersway

/(-swā`)/ · Coun·ter·sway · IPA
01 n. A swaying in a contrary direction; an opposing influence.
  1. 1.
    A swaying in a contrary direction; an opposing influence.[Obs.]
    “A countersway of restraint, curbing their wild exorbitance.” Milton.