sound

²sound

verb

Definition of SOUND

1

to measure the depth of (as a body of water) typically with a weighted line <the pilot sounded the river to make sure we weren't in any danger of running aground>

Synonyms fathom, plumb

Related Words gauge (also gage), scale, span; remeasure, replumb

2

to cast oneself head first into deep water <a whale suddenly surfaced and then, just as suddenly, sounded>

Synonyms pitch, plunge, sound

Related Words dip, immerse, submerge; belly flop, plump, plunk (or plonk)

Near Antonyms surface