Alternative form of 滄海: blue waters; vast ocean

(nautical) minesweeping

(nautical) to do minesweeping

(archaic) basin, tub / body of a traditional Japanese stringed instrument (such as biwa or kugo)

hidden / concealed / secret

storehouse, warehouse, cellar, magazine, granary, etc. (a building or interior space whose primary function is storage) / stock, supply, reserve, store (the amount of something so stored)

A gurgling sound.

gurgly.

(onomatopoeia) sound of coughing, hack hack

Wu (one of the families of the Chinese language)