1. able to be reached or arrived at
2. able to be contacted or communicated with

Examples

• The cabin is reachable only by hiking trail.
• Make sure you’re reachable by phone during business hours.
• The top shelf isn’t reachable without a ladder.
• Our goal of raising $10,000 is definitely reachable.
• The island is reachable by ferry twice daily.
• She’s always reachable via email.
• The summit is reachable in about four hours.