er ‧ rand /ˈerənd/ BrE AmE noun [countable]
[ Language: Old English ; Origin: ærend ]
a short journey in order to do something for someone, for example delivering or collecting something for them:
I seemed to spend my life running errands for people.
She was always sending me on errands.
on an errand
I couldn’t stop because I was on an errand.
He quickly set out on his errand of mercy (=journey to help someone in danger) .
⇨ (send somebody on) a fool’s errand at ↑ fool 1 (11)