The story
From turn + sick, because turning on the spot is a symptom of the disease.
Etymology from Wiktionary, CC BY-SA 4.0.
turnsick
Today it means: The disease coenurosis, specifically when it occurs in sheep. Full definition →
Today it means: The disease coenurosis, specifically when it occurs in sheep. Full definition →
From turn + sick, because turning on the spot is a symptom of the disease.
Etymology from Wiktionary, CC BY-SA 4.0.