To look daggers

to look or speak fiercely or reproachfully.
See under Dagger.

See also: Dagger, Look

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
At the moment only He knows, but soon the minister will, too, and from his pulpit he'll be able to look daggers at those who refuse to give.