E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Merveilleuse (3 syl., French).
The sword of Doolin of Mayence. It was so sharp that when placed edge downwards it would cut through a slab of wood without the use of force. (See SWORDS.)
1
Also a term applied to the 18th century French ladies dress.