transitive verb
to improve the morale of; raise the spirits of (often followed by “up”).
Hearing even a little good news during difficult times can buoy one up a great deal.
She’d been depressed, but the phone call from her friend really buoyed her up.
noun
1. a float attached by line to the bottom of a body of water to mark a location.
We’ll go left after we navigate past that buoy.
2. a float used to prevent someone from drowning.
Grab the buoy and hang on!