1. 表示交情极厚的：-- The guy isn't a hip. 这家伙什么都不懂. | Joined?at?the?hip??表示交情极厚的 | shoot?from?the?hip 信口开河

2. 他中学毕业后就去了当兵：took part in 我们昨天下午参加了会议. | joined 他中学毕业后就去了当兵. | finally 他尝试了很多次,终于成功了.

3. 加入/参加/结合：joinder /联合诉讼/共同诉讼/诉讼受理/ | joined /加入/参加/结合/ | joiner /联合者[物]/木匠/人缘广者/

adj

1. connected by a link, as railway cars or trailer trucks

    Synonym: coupledlinked

2. of or relating to two people who are married to each other

    Synonym: united