of lace-the act of securing, fastening, or tightening, with a lace or laces.-a lace; specifically (mach.), a thong of thin leather for uniting the ends of belts.-a rope or line passing through eyelet holes in the edge of a sail or an awning to attach it to a yard, gaff, etc.-a system of bracing bars, not crossing each other in the middle, connecting the channel bars of a compound strut.