Glare, stare fiercely, as in When she started to discuss their finances, he looked daggers at her. This metaphoric term, likening an angry expression to a dagger's thrust, dates from ancient times and has appeared in English since about 1600.
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
How to use look daggers in a sentence
Enyhow, I know ye've got to come to city ways when ye're to the city; folks kinder look daggers at ye ef ye don't.Uncle Rutherford's Nieces | Joanna H. Mathews
Nurse will look daggers at me and think I've been bullying you.Cynthia | Leonard Merrick
They look daggers at me if I put my head into the schoolroom.'The Two Sides of the Shield | Charlotte M. Yonge
You might look daggers at him for an hour and he would not notice it, and it would not trouble him if he did.Three Men in a Boat | Jerome K. Jerome
He was very musical, you know; he'd look daggers at you if you happened to sneeze in the middle of one of his Beethoven sonatas.The Story Of Julia Page | Kathleen Norris