1. 导向柱：guidelineless drilling 无导向索钻井 | guidepost 导向柱 | guides 导向器
2. 路标：1.交通规则trafficregulation | 2.路标guidepost | 3.里程碑milestone
3. 导柱：下模座 lower die set | 导柱 guidepost | 导套 guide bush
4. 引导柱：guidepin导梢 | guidepost引导柱 | guideplate导板
noun
1. a rule or principle that provides guidance to appropriate behavior
Synonym: guideline rule of thumb
2. danci.911chaxun.com
2. a post bearing a sign that gives directions or shows the way
Synonym: signpost