fasten or secure (something) with a lock

she closed and locked her desk

restrict access to the full functionality or data of (a computer, mobile phone, file, etc.), especially by requiring a user to verify their identity with a passcode or other form of authentication

my computer is locked and I've forgotten my login info

I don't want people to read my emails—that's why I lock my phone

make or become rigidly fixed or immovable

he locked his hands behind her neck

their gaze locked for several long moments

go through a lock on a canal

we locked through at Moore Haven