IPA: /ˈrɒkˌbaʊnd/
KK: /ˈrɑkˌbaʊnd/
Surrounded or bordered by rocks, often referring to a place like a lake or coastline.
The rockbound shore was difficult to access due to the steep cliffs.
Rockbound → It is formed from "rock" (from Old English "rocc", meaning a solid mineral material) and "bound" (from Old English "bund", meaning to tie or fasten). The word "rockbound" describes an area that is tightly surrounded or constrained by rocks.
Think of a place that is 'tied' or 'fastened' ('bound') by 'rocks' — that's what rockbound means.
No commonly confused words.