The story
From incidence or prevalence among miners, either formerly or still so.
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: Nystagmus. (Caused among miners by prolonged eye strain in low-light conditions; still prevalent but no longer especially among miners.) Full definition →
From incidence or prevalence among miners, either formerly or still so.
Etymology from Wiktionary, CC BY-SA 4.0.