1. the round parts of the eyes that can move and see
Usage: plural of eyeball

1. to look at something or someone carefully
Usage: informal; third person singular present

Examples

• The doctor examined her eyeballs with a small flashlight.
• His eyeballs moved rapidly during the dream phase of sleep.
• She could feel the pressure behind her eyeballs from the headache.
• The security guard eyeballs every customer who enters the store.
• He eyeballs the competition before each race.
• The teacher eyeballs the students to make sure they’re paying attention.