ground (n.)
advantage, upper hand, edge
2H4 II.iii.53[Lady Percy to Northumberland, of the rebels] If they get ground and vantage of the King
Cym I.v.101[Iachimo to Posthumus] With five times so much conversation, I should get ground of your fair mistress
SHAKESPEARE'S WORDS © 2020 DAVID CRYSTAL & BEN CRYSTAL