1. removes an obstruction from something that is blocked or clogged
2. frees someone or something from being choked or strangled

Examples

• The plumber unchokes the drain with a special tool.
• She carefully unchokes the garden hose that was twisted.
• The mechanic unchokes the carburetor to improve engine performance.
• He unchokes the victim by removing the obstruction from their throat.
• The janitor unchokes the sink using a plunger.
• The technician unchokes the air filter to restore proper airflow.