eyeball

US /ˈaɪ.bɑːl/
UK /ˈaɪ.bɑːl/
"eyeball" picture
1.

the globe of the eye, contained in the orbit and connected to the brain by the optic nerve

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The doctor examined her eyeball for any signs of damage.
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He felt a sharp pain behind his eyeball.
:
globeorb
1.

to look at closely or examine

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The mechanic will eyeball the engine to see if there are any obvious problems.
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She just eyeballed the ingredients instead of measuring them precisely.
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examineinspectgaugeestimate