castorialadj.
Pertaining to a hat (jocose).Apparently an isolated use.
ΚΠ
1864 J. R. Lowell Fireside Trav. 1 A graduated arc..by which he meted out to each his rightful share of castorial consideration.
This entry has not yet been fully updated (first published 1889; most recently modified version published online March 2020).
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adj.1864