noun
security bar; door bolt
A bar or bolt used to secure a door or gate, often placed horizontally across it. The term is somewhat specific and may be encountered in contexts like home security or traditional fittings.
夜は玄関に心張り棒をかける。
At night, I put the security bar across the front door.
古い家の門には心張り棒がつい
The gate of the old house has a bolt.