defenderapp
nounUK /dɪˈfendər æp/
US /dɪˈfendər æp/
A computer program that keeps your device safe from bad things.
My dad installed a defenderapp on my tablet to keep it safe.
OTHER MEANINGS
2. A mobile tool that blocks harmful files and links.
The defenderapp warned me about a dangerous website.
3. Software that watches for suspicious activity on a phone.
Her defenderapp sent an alert when a strange app tried to open.
4. A helper program that shields a computer from viruses.
The defenderapp cleaned the virus off the old laptop.