Dagger/ˈdæɡər/ Definition 1 of 3Pro Tip 1/3Concealable Weapon Daggers are small enough to be hidden on a person, signifying stealth or secrecy in stories. The spy had a dagger concealed in her boot. Pro Tip 2/3Historical Valor Historically, daggers were symbols of bravery and are often found in tales of knights and warriors. The ancient warrior was buried with his dagger. Pro Tip 3/3Alternative Meaning In modern context, 'dagger' can sometimes refer to something that hurts emotionally, like a betrayal. His harsh words felt like a dagger to her heart.