English
high ground
From high + ground.
Proto-Indo-European *kewk- ‘to bend’
Proto-Germanic *hauhaz
Proto-West Germanic *hauh
Old English hēah ‘high’
Middle English high
English high
Proto-Indo-European *gʰrem- ‘floor, settlement’
Proto-Germanic *grunduz ‘ground, foundation’
Proto-West Germanic *grundu
Old English grund
Middle English ground
English ground
Today it means
noun A position of advantage or superiority in a conflict or competition.
Language periods are conventional ranges, not dates for this word.
Etymograph / high ground