prōˈȯlēən, -ēˌän noun
( plural proaulions -nz ; or proau·lia -ēə)
Etymology: Late Greek, from Greek, vestibule, from pro pro- (I) + aulion cottage, chamber, diminutive of aulē court, hall — more at aula
: a portico or colonnade that opens into the narthex of a church or temple