Cant. Obs. A hole.
1620. Dekker, Villanies Discovered, xvii. P ij. He [an angler for duds] carries a short staffe in his hand which is called a filch, having in the Nab or head of it a Ferme (that is to say a hole).
1688. R. Holme, Armoury, III. iii. 168. Ferme, Hole, Cave, or hiding place.
1725. in New Cant. Dict.