makeweight
/ˈmeɪkweɪt/noun
1- something put on a scale to make up the required weight（秤重时）凑足重量的东西。
1.1
- an extra person or thing needed to complete something充数的人（或物）：
I had to tag him on to group deals as a makeweight.
我得添上他作为团购的凑数者。