foot-soldier samurai; low-ranking samurai guard on foot
Historical term for a low-ranking samurai who served as a bodyguard on foot, often in the Edo period. Not used in modern contexts except historically.
In the Edo period, kachizamurai guarded their lord on foot.
Compound of 徒 (かち, 'on foot') and 侍 (さむらい, 'samurai'). The exact historical derivation is uncertain, but the term describes a samurai who served without a horse.