government-owned slave
Archaic term from the Ritsuryō system, referring to a slave owned by the state. One of the five lowly classes (五色の賤).
See also: 五色の賤
Under the Ritsuryō system, kan'nuhi were slaves owned by the imperial court.
From 官 (government) + 奴婢 (slave). A historical term from the Ritsuryō legal codes.