A person's specific area of interest, skill, or authority. See Synonyms at field.(noun)
The office or district of a bailiff.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "bailiwick" in a sentence
"As Jim has mentioned, my bailiwick is law firm libraries, as opposed to academic libraries."
"What I'm trying to say is, your basic religion doesn't seem to make much of a difference to your belief (or lack of it) in the things that are more in my bailiwick, which is any kind of contact with the dead."
"And I think I'm probably taking you outside a little bit of your bailiwick, which is intelligence."