Collar day

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a day of great ceremony at the English court, when persons, who are dignitaries of honorary orders, wear the collars of those orders.
- Johnson.

See also: Collar

References in periodicals archive ?
But here - to mark what would have been Lennon''s 70th birthday, are no fewer than 32 images - only one without the tell-tale round spectacles, and dating from the Fab Four cutaway collar days (when JL, out of camera shot, actually wore thick black horn-rimmed glasses).