The term 'Basque Topper' refers to a traditional headdress worn by people from the Basque region of Spain and France. The crossword solutions for this term are BERET (5 letters), Jai (3 letters), ALAI (4 letters), Navarre (7 letters), and Iberian (7 letters). A BERET is a soft, round, flat-crowned hat typically made of wool felt or cotton. Jai is a traditional Basque sport similar to pelota. ALAI is a variation of jai that is played with a curved basket. Navarre is a historical kingdom in northern Spain and southern France. Iberian is an adjective used to describe something related to the Iberian Peninsula, which includes Spain and Portugal.