Meanings of prevent the ingress in English

BBB acts as a gate keeper to prevent the ingress of harmful foreign agents into the brain.

The Spaniards had no boats in the bay, and could not prevent the ingress of the Russian and American traders.

Once upon a time, to prevent the ingress of an enemy's fleet, a chain was stretched across the harbour's mouth.

Their houses are literally formed one cell within another, five or six in number, in order to prevent the ingress of the insects.

It is true that sometimes they have to provide means to prevent the ingress of too much water; but this is very easily done.

This produced a threat from Captain Thornborough that, unless supplied as before, he should prevent the ingress, or departure, of any vessel from the harbor.