noun
1. a flag that serves as a warning signal
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we didn't swim at the beach because the red flag was up
• Hypernyms: ↑flag, ↑signal flag, ↑alarm, ↑alert, ↑warning signal, ↑alarum
2. the emblem of socialist revolution
3. something that irritates or demands immediate action
-
doing that is like waving a red flag in front of a bull
• Hypernyms: ↑annoyance, ↑annoying, ↑irritation, ↑vexation
Useful english dictionary. 2012.