Definition of "bhang"

Almost from the outset of her arrival in the town, soft-muted music, the strange, heart-rending, mournful music of the East - suggestive of apes, and pearls, and bhang, and the colour blue - was to be heard, surging from the Nook in monotonous improvisation.

1919, Ronald Firbank, Valmouth, Duckworth, hardback edition, page 36

He rolled out from under Zelikman, who looked surprised as if by the turn his bhang dream had taken.

2007, Michael Chabon, Gentlemen of the Road, Sceptre 2008, page 101