A weight, the sixteenth part of a pound avoirdupois, and containing 437/ grains.
The twelfth part of a troy pound.
Fig.: A small portion; a bit.
A feline quadruped (Felis irbis, / uncia) resembling the leopard in size, and somewhat in color, but it has longer and thicker fur, which forms a short mane on the back. The ounce is pale yellowish gray, with irregular dark spots on the neck and limbs, and dark rings on the body. It inhabits the lofty mountain ranges of Asia. Called also once.
Only a man who knows what it is like to be defeated can reach down to the bottom of his soul and come up with the extra ounce of power it takes to win when the match is even. Muhammad Ali
What we face may look insurmountable. But I learned something from all those years of training and competing. I learned something from all those sets and reps when I didn't think I could lift another ounce of weight. What I learned is that we are always stronger than we know. Arnold Schwarzenegger