warrior's headband
袙 refers specifically to a warrior's headband, a cloth strip tied around the head.
袙 combines the clothing radical 衤 with 白, likely indicating a white cloth item worn on the body. The exact historical development is uncertain.
The clothing radical 衤 beside 白 (white) suggests a white cloth garment. Picture a warrior tying a white strip of cloth around his head before battle.
For バツ, imagine a warrior tying his headband and letting out a sharp battle cry: 'Batsu!' The sound バツ echoes as he secures the cloth.