a·bay·a 
(ə-bīə)
(ə-bīə)n.
A loose robe worn by Muslim women, especially in Arabic-speaking regions, covering the body from head to toe or the neck down and often worn with a headscarf and veil. Also called aba.
[Colloquial Arabic 'abāya, from Arabic 'abā'a, variant of 'abā', aba.]