Green’s Dictionary of Slang

feng v.

[Anglo-Saxon feng, a grasp, a hug]

(UK Und.) to steal.

c.1535
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1608
[UK]R. Copland Hye way to the Spyttel House Eiii: His watch shall feng a prounces nobchete.
[UK]Dekker Lanthorne & Candle-light n.p.: Docked the Dell, for a Coper meke, / His wach shall feng a Prounces Nab-chete.