ABSTRACT
Note that just like other nouns that start with a stressed a or –ha, (e.g., un / el agua clara – unas / las aguas claras – un / el hada madrina – unas / las hadas madrinas), this noun takes a masculine article in the singular even though for agreement purposes the noun is feminine in both the singular & plural: un / el arma bélica – unas / las armas bélicas.
