第三人称单数：billies
名词警棍，棍棒
1. 雄山羊：goat 山羊 | billy 雄山羊 | nanny 雌山羊
2. 警棍：billy goat 雄山羊 | billy 警棍 | billycock 小礼帽
1. 警棍
A billy or billy club is a short heavy stick which is sometimes used as a weapon by the police.
noun
1. male goat
Synonym: billy goathe-goat
2. a short stout club used primarily by policemen