1810 30 May A new round crowned wool hat.
1922 W. R. Benét xxii. 194 ‘You don't remember me, I'll bet,’ said the broad figure, having removed a round-crowned panama and applied a coloured silk handkerchief to a beady brow.
2000 D. Muir iii. 26 The wide-brimmed, round-crowned hat of the Quaker merchant.