Definition of Seikan Tunnel in English:

Seikan Tunnel

Line breaks: Sei¦kan Tun¦nel
Pronunciation: /ˈseɪkən
 
/
The world’s longest underwater tunnel, linking the Japanese islands of Hokkaido and Honshu under the Tsungaru Strait. Completed in 1988, the tunnel is 51.7 km (32.3 miles) in length.

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Word of the day oleaginous
Pronunciation: ˌəʊlɪˈadʒɪnəs
adjective
rich in, covered with, or producing oil; oily