The sea
yam (yawm)
from an unused root meaning to roar -- sea (-faring man, (-shore), south, west (-ern, side, -ward).
is come up
`alah (aw-law')
to ascend, intransitively (be high) or actively (mount); used in a great variety of senses, primary and secondary, literal and figurative (as follow)
upon Babylon
Babel (baw-bel')
confusion; Babel (i.e. Babylon), including Babylonia and the Babylonian empire -- Babel, Babylon.
she is covered
kacah (kaw-saw')
to plump, i.e. fill up hollows; by implication, to cover (for clothing or secrecy) -- clad self, close, clothe, conceal, cover (self), (flee to) hide, overwhelm.
with the multitude
hamown (haw-mone')
a noise, tumult, crowd; also disquietude, wealth -- abundance, company, many, multitude, multiply, noise, riches, rumbling, sounding, store, tumult.
of the waves
gal (gal)
something rolled, i.e. a heap of stone or dung (plural ruins), by analogy, a spring of water (plural waves) -- billow, heap, spring, wave.
thereof
