errand

Short definition from Wiktionary

Noun

1. 1
   A journey undertaken to accomplish some task: A mission or quest.
2. 2
   A journey undertaken to accomplish some task: A mundane mission of no great consequence, concerning household or business affairs (dropping items by, doing paperwork, going to a friend's house, etc.)
3. 3
   The purpose of such a journey.
4. 4
   An oral message trusted to a person for delivery.

Verb

1. 1
   To send someone on an errand.
2. 2
   To go on an errand.