or half-snags, adv. phr. (colloquial).Half-shares. See quots.
1683. EARL OF DORSET, A Faithful Catalogue of our Most Eminent Ninnies. She mounts the price and goes HALF SNACK herself.
1887. Walfords Antiquarian, p. 252. HALF SNAGS is a corrupted form of HALF SNACKS, i.e., half shares. If one of a party of arabs finds any article it becomes his entire property unless his fellows say HALF-SNAGS, or Quarter bits, or Some for your neighbours.