" Eureka! "
Eureka! means ‘I have found it!’
The exclamation is credited to the Greek inventor Archimedes, commenting on his discovery of the principle of water displacement and its use in measuring the volume of irregular objects.
" with a tortoise-shell clasp "
A tortoiseshell ornament of Micronesia. - Credit: Maksim
Tortoiseshell Cat - Credit: DrL
Grandmamma’s handbag has a tortoise-shell
clasp. In this instance it is likely a synthetic tortoise-shell, i.e. a substance made to resemble the actual shell of a tortoise. The term is also used to describe cats with colouring in shades of brown, black and cream.