Define Staring Daggers Meaning

Staring Daggers
Staring daggers -

1) Where you give a glare of jealously or hatred at someone, that feels like daggers are stabbing you.

2) Girls will stare daggers at someone when they are jealous or angry, or just hate you.

Luke: "Did you see that?"
Turk: "What?"
Luke: "Tracy was staring daggers at my girlfriend just then."
Turk: "Sound about right."
By Cyndia