kojishi (Noh mask of a young lion)
A specific Noh mask representing a young lion, used in plays such as 'Shakkyō'.
I saw a kojishi mask up close at the Noh theater.
lion cub
General term for a young lion; less common than the Noh mask sense in everyday use.
A lion cub was born at the zoo.
Compound of 小 (ko, 'small') and 獅子 (shishi, 'lion'). The reading こじし is a straightforward combination of the two elements.