gofer

名词 gofer:

1. an employee whose duties include running errands

gofer 也作 go-fer

n.Slang （名词）【俚语】
An employee who runs errands in addition to performing regular duties.
听差：除了做完本职工作以外替人跑差使的雇员

来源：
Alteration of go for
go for的变化
[from that person`s having to go for or after things]
[由替别人跑腿、干活的人而来]