[かぶら, kabura](n) (1) (abbr) (See 蕪) turnip-shaped whistle made of hollowed-out wood or deer horn (attached to an arrow to sound when fired); (2) (See 鏑矢) arrow with such a whistle attached[Add to Longdo]
[かぶらや, kaburaya](n) (See 嚆矢) arrow to which is attached a turnip-shaped whistle made of hollowed-out wood or deer horn; whistling arrow used to signal the start of battle[Add to Longdo]