Definition of Jilbab by Ibn Hazam

‘Allamah Ibn Al-Hazam writes:

In Arabic language, the language of the Prophet (sallallahu alaihi wasallam), Jalbab is that outer sheet which covers the entire body. A piece of cloth which is too small to cover the entire body could not be called Jalbab. 

(Al-Muhalla, vol. 3, p. 217)