or·i·fice (ôrə-fĭs, ŏr-)
An opening, especially to a cavity or passage of the body; a mouth or vent.
[Middle English, from Old French, from Late Latin ōrificium : Latin ōs, ōr-, mouth; see ōs- in the Appendix of Indo-European roots + Latin -ficium, a making, doing (from facere, to make; see dhē- in the Appendix of Indo-European roots).]
or′i·ficial (-fĭshəl) adj.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
The American Heritage Dictionary Blog
Check out our blog, updated regularly, for new words and revised definitions, interesting images from the 5th edition, discussions of usage, and more.