ironbound

Bound with iron.

Rigid and unyielding.

Bound with rocks and cliffs.

Bound with iron.

Faced or surrounded with rocks; rock-bound; rugged: as, an iron-bound coast.

Hard and fast; rigorous; inflexible as iron.

Bound as with iron; rugged.

Rigid; unyielding.

Bound as if with iron; rugged.

rigid; unyielding