Definition of "flea-ridden" [flea-ridden]

• Infested with fleas. (adjective)
• Mangy; filthy. (adjective)

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• "Researchers found that the immune systems of flea-ridden wild rats are busy fighting off everything from germs to parasites, whereas the immune systems of lab rats had nothing major to occupy them."
• "They obviously just wanted the flea-ridden pup out of their sight."
• "Aaron jerked his hand out of mine and started to claw at his stomach like a flea-ridden dog."