BOOT

boot (ce'on; the King James Version battle; the American Standard Revised Version "armor"; the American Revised Version, margin "boot"): The word ce'on, found only in Isaiah 9:5 (Hebrews 9:4), is probably a loanword from the Assyrian senu, meaning "shoe," "sandal." The root has the same meaning in Aramaic and Ethiopic. The passage should be translated "every boot of the booted warrior."

From the International Standard Bible Encyclopedia
Edited by James Orr, published in 1939 by Wm. B. Eerdmans Publishing Co.