[bmacho]

The featured article.

For usages see https://hn.algolia.com/?query=TFA&sort=byDate&type=comment

[amadeuspagel]

Is this acronym really worth it? I always just speak of the article.

[rolenthedeep]

HN has a whole series of acronyms for things ranging from "the linked article" to "the nth comment above this" and its super confusing.

I've given up on trying to learn them and just take a stab based on context