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ounce (1)

ounce [ ownss ] (plural ounc·es)


noun 
Definition:
 
1. unit of weight: a unit of weight in the avoirdupois system equal to one-sixteenth of a pound, approximately 28 g

2. fluid ounce: a unit for measuring liquid, equal to 0.0284 of a litre

3. small amount: a small amount of something
Anyone with an ounce of common sense would take an umbrella on a day like this.

[14th century. Via Old French unce< Latin uncia "twelfth part, inch, ounce" < unus "one"]
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