From Middle Dutch gaert, from Old Dutch *gart, from Proto-West Germanic *gard, from Proto-Germanic *gardaz, from Proto-Indo-European *gʰórdʰos or *gʰerdʰ-.
Cognate with English yard (compare also garden), obsolete German Gart, German Garten, Danish gård.
Also, cognate with Proto-Slavic *gard or *gord, shifted to Russian град (grad), Polish gród or Czech hrad.