Phrasal Verb: Freeze up

Meaning: Be blocked with ice

Example: The pipes all FROZE UP so no water came through.

Meaning: Stop working because the parts of a machine won't move

Example: The gears had FROZEN UP.

Meaning: When a computer stops working

Example: The computer FROZE UP; it showed me the blue screen of death and I couldn't reboot.

Meaning: Be paralysed with fear

Example: WE FROZE UP when we heard the window break.