Embossing relief images formed by using a <span style="color:#0000cd;">recessed die</span>.<br/><br/><b>Source</b>: Longman Dictionary<br/><br/> In my opinion <span style="color:#ff0000;"><b>a recessed die</b></span> means <span style="color:blue;">= a metal shaper fitted (fixed) in a wall used in the factories</span>.<br/><br/><b>Recessed</b> = fixed into a hollow or space on the wall or ceiling<br/><b>Die</b> = a metal block used to press or cut something into a particular shape<br/><br/>Am I right?<br/><br/>(I have asked this question in other forums and they have answered me but I have not fully understood their answers.)<br/><br/> Thank you