subs. (old).A thief: spec. a camp-follower. SNATCH-CLY = a pickpocket (GROSE).
1599. SHAKESPEARE, Henry V., i. 2. We do not mean the coursing SNATCHERS only.
1820. SCOTT, The Monastery, i. They would have fallen a speedy prey to some of the SNATCHERS in the neighbourhood.
See BODYSNATCHER.