Manumíssion. n.s. [manumission, Fr. manumissio, Lat.] The act of giving liberty to slaves.
Slaves wore iron rings until their manumission or preferment. Brown's Vulgar Errours, b. iv.
The pileus was somewhat like a night-cap, as the symbol of liberty, and therefore given to slaves at their manumission. Arbuthnot on Coins.