sounder
US /ˈsaʊn.dər/
UK /ˈsaʊn.dər/
1.
a device used to measure the depth of water or to detect objects underwater using sound waves
:
•
The fishing boat used a sounder to locate schools of fish.
•
Divers rely on a depth sounder for accurate readings.
2.
a person or thing that makes a sound
:
•
The old clock was a loud sounder, chiming every hour.
•
The alarm's sounder was broken, so it didn't go off.
1.
more sound or healthy; in better condition
:
•
After a good night's sleep, he felt much sounder.
•
The new bridge design is structurally sounder than the old one.