Hat with large brim that turned up in various ways. Also BICORNE, TRICORNE, CAVALIER, CONTINENTAL, ANDROSMAN KEVENHULLER.
hat with opposing brims turned up and caught together to form points
A hat with the brim turned up in two or three places, especially a three-cornered hat; a tricorn.
A pointed fore and aft hat made of black beaver with gold lace and falling feather plume (white and red for generals and staff, black for medical staff).
Where three bearings taken do not exactly intersect. Providing the triangle of calculation (cocked hat) is small enough (say less than 1 km across) the centre of the cocked hat may be taken as a fix (fixed position)
The Cocked hat is a style of formal headgear, or hat, worn by certain civilian, military and naval officials from the mid-19th Century until the beginning of World War II.