A
tiepin and
safety catch designed to thwart
pickpockets. "
We put the nippers (cutters) on the mark's (victim's) anchor and prop, and he didnt even know he was beat (robbed)" (note: While an aid pokes an opened newspaper in the face of the
victim, the actual
thief cuts the tie off above the point where the tiepin is fastened.)
- american underworld lingo - 1950