Hard Grass Plant, Eaten by Pandas
Puzzle 14 of Justin Timberlake Piece of Cake Pack
Question is: Hard Grass Plant, Eaten by Pandas
and the answer is: BAMBOO
Word Meaning:
BAMBOO — Any of the fast-growing grasses of the Bambusoideae subfamily, characterised by its woody, hollow, round, straight, jointed stem.
Definitions from Wiktionary.