†2.Nautical. to make daybreak: (of a ship) to mark daybreak formally, by the firing of a gun. Cf. makev.1 35f. Obsolete.
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1869 Times 20 May 9/3 When, however, the Agincourt, as the flagship of the fleet, ‘made daybreak’ by firing one of her guns, both wind and sea had gone down considerably.
1872 Routledge's Every Boy's Ann. 5 When the flag-ship ‘made day-break’ with one of her guns.