Definition of (as) tough as nails in English:

(as) tough as nails

phrase

  • (of a person) very strong and resilient in the face of hardship or pain.

    ‘a leader who is as tough as nails’
    as modifier ‘a tough as nails sergeant’
    • ‘He looked as tough as nails and certainly not a man to mess with.’
    • ‘Her mother was a midwife, tough as nails.’
    • ‘Her brother describes her as tough as nails.’
    • ‘She certainly can be as tough as nails when needed.’
    • ‘He was a fighter, tough as nails.’