[ad. med.L. cos-, custumālis, corresponding to OF. costumel, f. Rom. and med.L. costuma, OF. costume CUSTOM: see -AL.] Having to do with the customs of a city, etc.
1889. Sir J. Monckton in Pall Mall Gaz., 5 Oct., 6/3. I find in the records no note of deviation from the usual custom, and as the custumal officer of the Corporation I should feel bound to advise against it.
