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euphemism The normal workings of the body, especially those usually done in private, such as urinating or defecating. When you have three sons, bodily functions are a common topic of discussion around the house.
function as (something)
To have a particular purpose or fill a certain role. Mrs. Smith will function as your homeroom teacher for the rest of the year now that Mrs. Jones is on maternity leave.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
Euph. anything the body does automatically or as a normal occurrence, especially urinating and defecating. The dog needed to go outside and perform her bodily functions. It is not polite to discuss bodily functions at the dinner table.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
To serve a purpose or play a role similar to that of something else: The beaks of some wading birds function as spears for catching fish.
The American Heritage® Dictionary of Phrasal Verbs. Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.