Diseased or unhealthy in appearance; afflicted with a livestock disease causing animals to eat strange plants or become ill.
From browse (to graze on shrubs and trees) plus -sick suffix indicating disease. The word describes animals that become ill from incorrect browsing habits or eat poisonous plants.
Browsick refers to an actual historical livestock problem—when animals ate toxic plants while foraging, they'd develop what farmers called 'browse sickness,' so this technical term solved a real naming need on farms.
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