来自法语piquet,尖木桩，来自piquer,刺，刺穿，词源同pike,pique.原指对抗骑兵的竖在地上的尖刺或木桩，引申词义看守敌人的巡逻队，后引申现词义。

1. There are picket lines all over the place.

到处都有罢工纠察线。

2. No one tried to cross the picket lines.

没人试图穿过纠察线。

3. Fire crews refused to cross the picket line.

消防人员拒不冲破围厂队伍人墙。

4. He lives in a white-painted frame house behind a picket fence up in Connecticut.

他住在康涅狄格州北部一个漆成白色的木制房子里，屋子前面竖着尖桩篱栅。

5. The miners are trying to get factory workers to join them on the picket line.

矿工正设法让工厂工人加入他们的纠察队人墙。