yellow light
US /ˈjel.oʊ ˌlaɪt/
UK /ˈjel.oʊ ˌlaɪt/
1.
a yellow traffic light, indicating that drivers should prepare to stop or proceed with caution
:
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The car sped up to beat the yellow light.
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Always slow down when you see a yellow light.
2.
a warning or caution, indicating that something is not fully approved or there are potential issues
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The manager gave the project a yellow light, meaning it needs more review.
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His doctor gave him a yellow light on strenuous exercise due to his recent injury.