Strong’s Hebrew
H2121 — zeydown
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
זֵידוֹן
zeydown — pronounced zay-dohn
from 2102; boiling of water, i.e. wave:--proud. see H02102
1 occurrence in the KJV.
Psalms 124:5
Then the proud waters had gone over our soul.