Definition
Used to express that someone would like or needs something.
I could really use a coffee to wake me up right now.
After a long day at work, I could use a good rest.
This house could use some new paint.
Used to indicate that something or someone needs improvement or assistance.
He could use some practice with his presentation skills.
The garden could use a bit of tidying up.
This car's engine could use a check-up.