Sentence:  One of the most damaging tsunami on record followed the famous <WSD>Lisbon</WSD> earthquake of November 1 , 1755 ; its waves persisted for a week and were felt as far away as the English coast . 
Meaning of the word marked with <WSD> tags:  capital and largest city and economic and cultural center of Portugal; a major port in western Portugal on Tagus River where it broadens and empties into the Atlantic