trepan

trepan \trih-PAN\, noun:

1. a person who ensnares or entraps others.
2. a stratagem; a trap.

verb:
1. to ensnare or entrap.
2. to entice.
3. to cheat or swindle.

...no one of your appearance and manners would wish to trepan a gentleman under misfortune.
-- Sir Walter Scott, Redgauntlet, 1824

"Who disturb the peace of families, who trepan with wanton arts the heirs of noble houses— who— hah ? what do such deserve ?"
-- Ann Radcliffe, The Italian, 1797

Trepan is of unknown origin, though it might have come from thieves' slang. The noun describing a person entered English in the mid-1600s, followed shortly after by the verb.