drawbar
/ˈdrɔːbɑː(r)/noun
1
- a bar on a vehicle to which something can be attached to pull it or be pulled（机动车辆上的）牵引杆。
2
- a bar in a structure that can be removed to allow someone through or to let other parts move（可拆掉以便让人通过或使其他组成部分移动的）活动闩, 活动栏杆。
3
- one of a number of bars that may be pulled out to control harmonics on an electric organ（电风琴上控制和声的）拉杆。