bandera
flag
band
a strip or stripe
+
-era
noun suffix (object or place)
Bandera means flag and can be thought of as band0 (a strip or stripe0) + -era1 (noun suffix for an object1), forming the idea of an object made of a strip of cloth.
noun
- flagA piece of cloth with distinctive colors and patterns used as a symbol of a country or organizationLa bandera nacional ondea en el edificio. // The national flag waves on the building.