Emily Dickinson Lexicon

giant, adj. [see giant, n.]

1. Great; enormous; [fig.] highly significant.
2. Huge; very large; extraordinary in size; [transferred modifier = “one giant drop of rain.”]
3. Phrase. “Giant long”: of great length; as long as that of a giant; [adverbial; compare Sw. jätte as an intensifier] gigantically long.