What part of speech is second?

"Second" can be several parts of speech, depending on its use in a sentence:

* Adjective: Describing the order or position of something. Example: "He came in second place."

* Noun: Referring to the number two in a sequence. Example: "She bought two seconds of fabric."

* Adverb: Modifying a verb, adjective, or another adverb, meaning "again" or "in addition." Example: "He looked at her second, and then looked away."

It's important to look at the context to determine the specific part of speech.