Means your neighbourhood, ends, or patch, the bit you call home turf. Usually said as my manor when you’re claiming you know the roads, the faces, and how things run round there. It’s half pride, half warning, like you’ve got local status even if it’s just a high street, a chicken shop, and a bus stop.
"Safe, we’re on my manor. Don’t start moving mad, I know the auntie in the shop and the mandem by the chicken place."