bastão (no sentido figurado) (o termo em inglês parece “Tião” com sotaque francês) - Definition: A projection in the wall of a fortress that commands the walls on either side; any well-fortified position or impregnable stronghold.
"For centuries [the bar] was the bastion of male privilege, the gathering place for men away from their women...."
It refers to a stronghold that also may be a safe refuge: "The beauty parlor of the 1950's was the great bastion of femininity, where women could gather and converse on topics of interest only to them."
Today, however, few such bastions remain, as women invade the bars and more men have their hair styled in beauty parlors than cut at the barber's.
Source: Your Dictionary