tough cookie
noun
RareNot in standard dictionaries
1
A person who can endure physical or mental hardship; a hardened, strong-willed person.
2
A hardy, resilient animal or plant.
3
Something troublesome or difficult to handle.
Thesaurus
#informal
A person who can endure physical or mental hardship; a hardened, strong-willed person.
A hardy, resilient animal or plant.
Something troublesome or difficult to handle.