What part of speech is ounce?

"Ounce" can be two different parts of speech, depending on how it's used:

* Noun: When referring to a unit of weight, it's a noun. For example: "There are 16 ounces in a pound."

* Verb: It can also be a verb, meaning "to reduce in size or quantity." For example: "The doctor ounced the medication to fit the child's dosage."

To determine which part of speech "ounce" is, you need to look at the context of the sentence.