siss v also sess EDD ~ v 2. To urge dog to run, attack or threaten (someone); HUSS.
1937 DEVINE 45 ~ To set the dogs onto someone or something. An instance of onomatopoeia, from the sound made in urging them on. Also sess. P 12--69 I'll siss the dog on you! 1971 NOSEWORTHY 243 ~ A call to a dog to attack a person or another dog. C 75When a man has a harness of dogs he will 'siss' them after something in order to get them to move.
