(on) foot(- man)

“Feet” From Boyd’s Bible Dictionary:

To wash, a sign of hospitality
(Gen. 18:4; 1 Sam. 25:41; John 13:5-6). To remove shoes, a reverence (Ex. 3:5); sign of mourning (Ezek. 24:17).

“Footmen” From Boyd’s Bible Dictionary:

Swift runners, couriers
(1 Sam. 22:17; 1 Kings 14:28; 2 Kings 11:4).

Concise Bible Dictionary:

1. ragli, “on foot:” often used for the foot soldiers in distinction from those in chariots or on horseback (Num. 11:21; Judg. 20:2; 1 Chron. 18:4; &c). In Jeremiah 12:5 it is applied to those that ran.
2. ruts, “runner.” (1 Sam. 22:17). Samuel said that their king would make some of them to run before his chariot (1 Sam. 8:11). Such are commonly employed in the East to run before the great, to clear the way for them.

Strong’s Dictionary of Hebrew Words:

Transliteration:
ragliy
Phonic:
rag-lee’
Meaning:
from 7272; a footman (soldier)
KJV Usage:
(on) foot(- man)