hard nail
English edit
Noun edit
hard nail (plural hard nails)
- (figurative) A strong person, in character and physique.
- 1912, Arthur Conan Doyle, The Lost World […], London, New York, N.Y.: Hodder and Stoughton, →OCLC:
- "He's a hard nail, is Jack, and a dead shot, too, but you can't leave a Grand National winner to die like that - what?"