serve as (something)

serve as (something)

To act in the capacity of a particular role. I served as a legal secretary for a couple of years while I worked on my law degree. I couldn't even afford furniture, so I just had empty boxes and stacks of books acting as my tables and chairs. We'll have a limited release the product and let this region serve as a guinea pig. If it is received well, we can expand production and distribution to the rest of the county.
See also: serve
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

serve as someone or something

to act in the capacity of someone or something. I served as the mayor's assistant for a number of years. This brick will not serve as a doorstop.
See also: serve
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
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