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Related to keep back: keep up


Architecture the main tower within the walls of a medieval castle or fortress


Inner tower of a castle.

keep, donjon

The stronghold of a medieval castle, usually in the form of a massive tower, and a place of residence, esp. in times of siege.
References in periodicals archive ?
A home-made banner saying "Welcome Sahil" hung from windows outside the terraced house, with steel barriers surrounding the property to keep back dozens of reporters and photographers.
2 : to hold or keep back <Bad weather prevented us from leaving.
She said: 'I have always enjoyed keeping active and am aware that it's a great way to keep back pain at bay.
With the cereal harvest getting underway across the region, the RSPB has issued an appeal to local farmers to keep back just half a tonne of grain from the crop to help feed birds over the winter.
Obviously, we need to keep back some of the money just to pay for the fuel.
2 : to keep back : curb <He couldn't restrain his laughter.
Police fired into the air to keep back the surging crowd at the Ramallah compound, known as the Muqata, where Arafat spent his last years as a virtual prisoner.
First the government tries to shirk its responsibilities by getting local authorities to impose a new tax, and when that doesn't work it threatens to keep back some cash which might actually do some good.