nodding acquaintance

nodding acquaintance idiom
Superficial knowledge of someone or something, as in I have a nodding acquaintance with the company president, or She has a nodding acquaintance with that software program. This expression alludes to knowing someone just well enough to nod or bow upon meeting him or her. “Early 1800s]

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Comments
Improve this definition.
Do you have more to add? Share your linguistic knowledge or observation.
/Register to save your comments.