A fastening, as for a door or gate, typically consisting of a bar that fits into a notch or slot and is lifted from either side by a lever or string. 門閂閂，例如門閂，尤指帶有一橫銷，插在槽或狹縫中通過把手或鐵鏈從一頭提到另一頭
A wedge or key that fits into a groove to make a joint. 加強肋作為連接物填入槽內的楔形物或舌狀物
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