Green’s Dictionary of Slang

manor n.

[note ‘Walter’, My Secret Life (1888–94): ‘You leave the girl alone, it’s my manor’]

1. [1920s+] (US/UK Und./police) an area of operations, one’s home base.

2. [1930s+] (UK Und.) one’s local area.

3. [1960s+] an indeterminate place, used generically.