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. 门闩闩,例如门闩,尤指带有一横销,插在槽或狭缝中通过把手或铁链从一头提到另一头
A wedge or key that fits into a groove to make a joint. 加强肋作为连接物填入槽内的楔形物或舌状物