A term often used to describe a shape or compression resembling the narrowing middle part of an hourglass.

घंटाघर के आकार का संकुचन

English Usage: The doctor noted an hour glass constriction in the patient's esophagus.

Hindi Usage: डॉक्टर ने मरीज के अन्नप्रणाली में घंटाकार संकुचन देखा।