Toronto urban slang. Abbreviated form of "Allow that". To permit, ignore, or be in agreeance with.
Toronto Urban Male 1: Yo dis bucket on block tried to link my ting fam. Tru say mans bout to tump him in his head top my G.
Toronto Urban Male 2: Nyeah eh? But differently though, just 'low the man. Dun know he's been a wasteyute from time.