a line weighted with a lead or plummet (sounding lead) and bearing marks to show the length paid out, used for sounding, as at sea.
a line marked off to indicate its length and having a sounding lead at one end. It is dropped over the side of a vessel to determine the depth of the water
noun, Navigation. 1. any of various machines for taking and recording soundings.
noun 1. a rocket equipped with instruments for making meteorological observations in the upper atmosphere.
noun 1. phonetic law.
adjective 1. without sound; silent; quiet. adjective 1. unfathomable; very deep. adjective 1. extremely still or silent adjective 1. (mainly poetic) extremely deep