sb. and a. [see PROOF.]

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  A.  sb. Impenetrability to cannon-shot; safety from cannon; cannon-proof armament.

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1601.  Cornwallyes, Ess., II. xxix. (1631), 42. Put him in a Castle by Cannon proofe well guarded.

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1611.  Beaum. & Fl., King & No K., III. ii. (1619), 41. If I might stand still in Canon proofe, and haue fame fall vpon me, I would refuse it.

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  B.  adj. Impenetrable to cannon-shot; proof against cannon.

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1632.  G. Hughes, Saints Losse, 37. It’s Canon-proofe and a wall impregnable?

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1667.  Earl Orrery, State Lett. (1743), II. 222. I endeavour to make my batteries at Kingsale cannon proof.

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1695.  Lond. Gaz., No. 3100/4. The Lodgment on the Right was made Cannon proof.

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