noun Chiefly British.
- mersenne number
Origin of merrythought
Examples from the Web for merrythought
The wings must be taken off in the line a, b, and the merrythought in the line c, d.
I see I am wrong again, the drumstick is in the dish, and the merrythought is in my head, with numerous companions.Adrift in a Boat|W.H.G. Kingston
Cut off the merrythought in the line f, g, by passing the knife under it towards the neck.
Again, all birds that can fly possess a “merrythought,” or furculum; and such is not found in the Pterodactyl.Extinct Monsters|H. N. Hutchinson
The breast, wings, and merrythought, are the most esteemed; but the leg has a higher flavour.