(chemistry) A polycyclic aromatic hydrocarbon containing four fused benzene rings; first isolated from coal tar

(botany) the stone of a drupe

plural of pyrene

Of, pertaining to, or derived from pyrene

(botany) Relating to the stone of a drupe.

Of or pertaining to the Pyrenees, a range of mountains separating France and Spain

A native or inhabitant of the Pyrenees.

The mountain range separating Spain from France, inhabited by Basques in the west, Occitans in the centre-north, Aragonese in the centre-south, and Catalans in the east.

(US) A large breed of dog originating in France and often used to guard livestock.

A recently extinct subspecies of the Iberian ibex, Capra pyrenaica pyrenaica.