noun Pathology.
spasmodic winking.

1870–75; blepharo- + spasm Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
blepharospasm (ˈblɛfərəʊˌspæzəm)
spasm of the muscle of the eyelids, causing the eyes to shut tightly, either as a response to painful stimuli or occurring as a form of dystonia
[C19: from Greek blepharo(n) eyelid + spasm]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

blepharospasm bleph·a·ro·spasm (blěf'ə-rō-spāz'əm)
Spasmodic winking caused by the involuntary contraction of an eyelid muscle.

The American Heritage® Stedman's Medical Dictionary
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