Definition of Dardanelles in English:
Dardanelles
proper nounˌdɑːdəˈnɛlzˌdɑrdnˈɛlz
A narrow strait between Europe and Asiatic Turkey (called the Hellespont in classical times), linking the Sea of Marmara with the Aegean Sea. It is 60 km (38 miles) long. In 1915 it was the scene of an unsuccessful attack on Turkey by Allied troops (the Gallipoli campaign).
Definition of Dardanelles in US English:
Dardanelles
proper nounˌdärdnˈelzˌdɑrdnˈɛlz
A narrow strait between Europe and Asiatic Turkey (called the Hellespont in classical times) that links the Sea of Marmara with the Aegean Sea. It is 38 miles (60 km) long. In 1915, it was the scene of an unsuccessful attack on Turkey by Allied troops (the Gallipoli campaign).