Large Fern With Fiddlehead
Puzzle 10 of Sports Venue Hard Pack
Question is: Large Fern With Fiddlehead
and the answer is: BRACKEN
Word Meaning:
BRACKEN — (uncountable, countable) Any of several coarse ferns, of the genus Pteridium, that form dense thickets; often poisonous to livestock.
Definitions from Wiktionary.