What part of speech is in It weighs about a pound?

Let's break down the sentence "It weighs about a pound" to identify the parts of speech:

* It: This is a pronoun, specifically a subject pronoun as it acts as the subject of the sentence.

* weighs: This is a verb, specifically a present tense verb indicating an action.

* about: This is an adverb, specifically an adverb of degree, modifying the verb "weighs" by indicating an approximate amount.

* a: This is an article, specifically an indefinite article, used before a singular noun to indicate any one of a certain kind.

* pound: This is a noun, specifically a singular noun, referring to a unit of weight.

Therefore, the parts of speech in the sentence are:

* Pronoun: It

* Verb: weighs

* Adverb: about

* Article: a

* Noun: pound