joiner
/ˈdʒɔɪnə(r)/noun
1
- a person who constructs the wooden components of a building, such as stairs, doors, and door and window frames（制作楼梯、门、门框及窗框等的）建筑木工, 细木工。
2
- informal a person who readily joins groups or campaigns〈非正式〉社团（或活动）活跃分子：
a compulsive joiner of revolutionary movements.
痴迷革命运动的活跃分子。
词源
Middle English: from Old French joigneor, from joindre 'to join'.