This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
娨 combines 女 (woman) with 旱 (drought). The exact historical development is uncertain, and the character is rare with no clear established etymology.
A woman 女 beside drought 旱 suggests a harsh, dry environment. Without a clear meaning, picture a woman enduring drought, perhaps with a proud or stubborn attitude.
For バン, imagine a woman in a drought-stricken land, baking under the sun: baking -> バン, and the heat makes her stubborn.