1. a unit of apothecary weight equal to 480 grains or one twelfth of a troy pound

Definition categories: quantity

2. a unit of weight equal to one sixteenth of a pound or 16 drams or 28.349 grams

Definition categories: quantity

3. large feline of upland central Asia having long thick whitish fur

Definition categories: animal, cat

Sentences with ounce as a noun:

- He didn't feel even an ounce of regret for his actions.