What part of speech is long?

"Long" can be several parts of speech depending on how it's used in a sentence:

* Adjective: Describes a noun. Example: "The road is long."

* Adverb: Modifies a verb, adjective, or another adverb. Example: "He waited long for her."

* Noun: Refers to a length of time. Example: "He spent a long."

To determine the part of speech, look at the sentence and how "long" is used.