rock·y 1 
(rŏkē)
(rŏkē)adj. rock·i·er, rock·i·est
1. Consisting of, containing, or abounding in rock or rocks.
2.
a. Resembling or suggesting rock; firm or hard.
b. Steadfast or stubborn; unyielding: her rocky heart.
3. Marked by obstructions or difficulties: the rocky road to success.
rocki·ness n.