backing (n.)
backing up, being in support
1H4 II.iv.145[Falstaff to Prince Hal, of Hal's behaviour] Call you that backing of your friends?
3H6 II.ii.69[Messenger to all] with a band of thirty thousand men / Comes Warwick, backing of the Duke of York
SHAKESPEARE'S WORDS © 2018 DAVID CRYSTAL & BEN CRYSTAL