blicker

From dialectal *blick (Middle English bliken) + -er (frequentative), undoubtedly influenced by flicker.

blicker (third-person singular simple present blickers, present participle blickering, simple past and past participle blickered)

1. To flicker, to shine or reflect light intermittently.
   • For quotations using this term, see Citations:blicker.
   • (Can we date this quote?), Supreme Court Papers on Appeal, Supreme Court (New York), Affidavit of Samuel Schindler, in a matter of Hammersmith, Schindler et al. vs. New York, Onario & Western Railway Company, regarding injuries sustained on July 31, 1932, page 45 (combined volume page 133):

     […] he did not see the lights flicker or blicker upon the approach of a train; that they were out of order. […] At the time of the accident, at about 7:30 P. M., he was within close proximity to the accident, and did not see the blickering or flickering of the lights and did not hear any blasts or whistles from the train.