tack
/tæk/noun [物质名词] 大头钉，图钉；（为定样临时缝上的）粗缝针脚；马具，鞍辔；（航海）抢风调向，抢风航行路线，抢风航程；（系住帆角的）系帆索；（用系帆索）系住的帆角；行动方针，策略；廉价且难看的物品；黏着性，黏着力；（航海）（系住帆角的）系帆索
A tack is a short nail with a broad, flat head, especially one that is used for fastening carpets to the floor. 平头钉
verb [vt. 及物动词] （用平头钉）钉上，固定住；（为定样而）用粗缝针脚缝；戗风行驶，蜿蜒航行；（尤指画蛇添足地）增补，附加
If you tack pieces of material together, you sew them together with big, loose stitches in order to hold them firmly or check that they fit, before sewing them permanently. 用粗线脚缝
