Quick meaning
A device you have previously verified for login so you are not asked for a second factor every time you use it.
Think of it like this
Like your own home — once you have proved you live there, you don't need to show ID every time you enter.
Where you may see this
You may see this in login screens, warning messages, banking apps, or scam-prevention advice.
Why it matters
Understanding this word helps you protect your money, personal information, and online accounts.
Say it simply
Trusted Device means: A device you have previously verified for login so you are not asked for a second factor every time you use it.