Definition of "countermines" []

• Plural form of countermine. (noun)

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• "But the most part of the sayd mines came to no proofe though they put fire in them, and many were met with countermines, and broken by our men by the good diligence and sollicitude of sir"
• "Gabriel Du-chef, steward of the house of the lord great master, which had the charge of the sayd countermines at the same bulwarke."
• "But the countermines met not, sauing those of the Commander of S. Nappa, of Andruzzi, and that of Campo Santo, because they were open, and our men sallied out often both by day and night into the ditch to perceiue better the way of the mines, and to fire the fagots and wooll."