ˈsaɪər, ˈsaɪrər

Definitions

1. noun

A person or thing that sighs, or a device that produces a sighing sound, especially a mechanical device used in a heating system to vent excess gas.

“The building’s heating system included a sigher to release the pressure.”

2. verb

To produce a sighing sound or to release air or gas slowly and noisily, as a heating system or a mechanical device.

“The old furnace began to sigher and rattled loudly.”