a herd of wild swine

he spied a sounder of pigs trotting through the garden

a device used to ascertain the depth of a body of water

multi-beam echo sounders

the depth sounder tells him how deep his traps are

in good condition; not damaged, injured, or diseased

they returned safe and sound

based on valid reason or good judgement

sound advice for healthy living

the scientific content is sound

(of sleep) deep and undisturbed

a doze that deepened into a sound sleep

(of a beating) severe

such people should be given a sound thrashing