Of Israel in Egypt (Exodus 2:23,25; 5), which is called the "house of bondage" (13:3; 20:2). This word is used also with reference to the captivity in Babylon (Isaiah 14:3), and the oppression of the Persian king (Ezra 9:8,9).
These dictionary topics are from M.G. Easton M.A., D.D., Illustrated Bible Dictionary, Third Edition, published by Thomas Nelson, 1897. Public Domain, copy freely.
Easton, Matthew George. "Entry for 'Bondage'". "Easton's Bible Dictionary".