1. providing shelter or refuge; affording a safe harbor
Usage: literary or formal; nautical contexts
2. suitable or favorable for harboring ships or vessels
Usage: nautical

Examples

• The harborous cove provided safe anchorage for the fleet during the storm.
• Sailors sought out harborous waters along the rocky coastline.
• The small island offered a harborous refuge for weary travelers.
• That harborous inlet was well-known to local fishermen.
• The captain steered toward the harborous bay to escape the rough seas.