What does the word nugget mean?

Usage examples for nugget

  1. After the tricks you played on that villain your life would not be worth the smallest nugget in those sacks if you stayed here. – The Shagganappi by E. Pauline Johnson
  2. If he had been able to put it with the money from his nugget and revolvers it would at least have taken him to Denver. – The Eagle's Heart by Hamlin Garland
  3. To him the days were as precious mines, and every minute a nugget. – The Adventures of a Three-Guinea Watch by Talbot Baines Reed