subs. phr. (old).—Rough headgear. [Properly a rugged rocky headland swept by the sea.]
1694. MOTTEUX, Rabelais, v. ‘The Pantagruelian Prognostication.’ Scourers of greasy THRUM CAPS, stuffers, and bumbasters of pack saddles.
1772. BRIDGES, A Burlesque Translation of Homer, 10. Smite my THRUM-CAP, and noddle too.
